/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:12:09,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:12:09,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:12:09,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:12:09,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:12:09,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:12:09,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:12:09,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:12:09,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:12:09,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:12:09,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:12:09,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:12:09,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:12:09,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:12:09,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:12:09,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:12:09,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:12:09,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:12:09,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:12:09,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:12:09,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:12:09,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:12:09,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:12:09,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:12:09,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:12:09,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:12:09,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:12:09,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:12:09,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:12:09,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:12:09,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:12:09,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:12:09,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:12:09,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:12:09,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:12:09,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:12:09,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:12:09,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:12:09,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:12:09,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:12:09,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:12:09,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:12:09,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:12:09,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:12:09,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:12:09,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:12:09,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:12:09,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:12:09,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:12:09,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:12:09,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:12:09,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:12:09,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:12:09,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:12:09,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:12:09,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:12:09,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:12:09,162 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:12:09,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:12:09,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:12:09,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:12:09,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:12:09,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:12:09,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:12:09,163 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:12:09,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:12:09,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:12:09,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:12:09,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:12:09,633 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:12:09,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-04 15:12:09,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff5494aa/7091e76867a94457805bc49c78809b97/FLAG50ebb6001 [2020-09-04 15:12:10,388 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:12:10,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-04 15:12:10,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff5494aa/7091e76867a94457805bc49c78809b97/FLAG50ebb6001 [2020-09-04 15:12:10,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff5494aa/7091e76867a94457805bc49c78809b97 [2020-09-04 15:12:10,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:12:10,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:12:10,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:12:10,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:12:10,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:12:10,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:12:10" (1/1) ... [2020-09-04 15:12:10,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:10, skipping insertion in model container [2020-09-04 15:12:10,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:12:10" (1/1) ... [2020-09-04 15:12:10,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:12:10,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:12:11,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:12:11,184 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:12:11,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:12:11,304 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:12:11,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11 WrapperNode [2020-09-04 15:12:11,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:12:11,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:12:11,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:12:11,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:12:11,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... [2020-09-04 15:12:11,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... [2020-09-04 15:12:11,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... [2020-09-04 15:12:11,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... [2020-09-04 15:12:11,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... [2020-09-04 15:12:11,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... [2020-09-04 15:12:11,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... [2020-09-04 15:12:11,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:12:11,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:12:11,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:12:11,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:12:11,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:12:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:12:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:12:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:12:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:12:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:12:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:12:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:12:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:12:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:12:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:12:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:12:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:12:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:12:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:12:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:12:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:12:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:12:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:12:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:12:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:12:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:12:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:12:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:12:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:12:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:12:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:12:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:12:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:12:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:12:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:12:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:12:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:12:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:12:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:12:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:12:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:12:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:12:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:12:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:12:12,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:12:12,811 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:12:12,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:12:12 BoogieIcfgContainer [2020-09-04 15:12:12,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:12:12,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:12:12,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:12:12,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:12:12,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:12:10" (1/3) ... [2020-09-04 15:12:12,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb2b009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:12:12, skipping insertion in model container [2020-09-04 15:12:12,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:11" (2/3) ... [2020-09-04 15:12:12,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb2b009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:12:12, skipping insertion in model container [2020-09-04 15:12:12,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:12:12" (3/3) ... [2020-09-04 15:12:12,827 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2020-09-04 15:12:12,839 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:12:12,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:12:12,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:12:12,900 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:12:12,900 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:12:12,901 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:12:12,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:12:12,901 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:12:12,901 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:12:12,901 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:12:12,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:12:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-09-04 15:12:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-04 15:12:12,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:12,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:12,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash 769335885, now seen corresponding path program 1 times [2020-09-04 15:12:12,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:12,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959743902] [2020-09-04 15:12:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:13,046 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,728 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:12:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:13,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959743902] [2020-09-04 15:12:13,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:13,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:12:13,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149221989] [2020-09-04 15:12:13,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:12:13,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:13,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:12:13,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:12:13,927 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 4 states. [2020-09-04 15:12:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:15,220 INFO L93 Difference]: Finished difference Result 478 states and 564 transitions. [2020-09-04 15:12:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 15:12:15,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-04 15:12:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:15,243 INFO L225 Difference]: With dead ends: 478 [2020-09-04 15:12:15,243 INFO L226 Difference]: Without dead ends: 306 [2020-09-04 15:12:15,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:12:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-04 15:12:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 257. [2020-09-04 15:12:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-09-04 15:12:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 278 transitions. [2020-09-04 15:12:15,420 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 278 transitions. Word has length 148 [2020-09-04 15:12:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:15,422 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 278 transitions. [2020-09-04 15:12:15,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:12:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 278 transitions. [2020-09-04 15:12:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 15:12:15,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:15,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:15,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:12:15,435 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:15,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1712592355, now seen corresponding path program 1 times [2020-09-04 15:12:15,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:15,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356293798] [2020-09-04 15:12:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:15,440 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,859 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:15,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:12:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:12:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:15,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356293798] [2020-09-04 15:12:15,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:15,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:12:15,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107751321] [2020-09-04 15:12:15,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:12:15,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:15,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:12:15,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:12:15,966 INFO L87 Difference]: Start difference. First operand 257 states and 278 transitions. Second operand 5 states. [2020-09-04 15:12:16,632 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:17,600 INFO L93 Difference]: Finished difference Result 403 states and 455 transitions. [2020-09-04 15:12:17,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:12:17,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-04 15:12:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:17,606 INFO L225 Difference]: With dead ends: 403 [2020-09-04 15:12:17,606 INFO L226 Difference]: Without dead ends: 295 [2020-09-04 15:12:17,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:12:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-04 15:12:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 247. [2020-09-04 15:12:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-04 15:12:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 265 transitions. [2020-09-04 15:12:17,681 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 265 transitions. Word has length 149 [2020-09-04 15:12:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:17,682 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 265 transitions. [2020-09-04 15:12:17,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:12:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 265 transitions. [2020-09-04 15:12:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-04 15:12:17,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:17,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:17,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:12:17,685 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:17,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1803359450, now seen corresponding path program 1 times [2020-09-04 15:12:17,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:17,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462358751] [2020-09-04 15:12:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:17,689 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,043 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:18,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:12:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:12:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:12:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:18,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462358751] [2020-09-04 15:12:18,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:18,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:18,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036690493] [2020-09-04 15:12:18,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:18,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:18,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:18,370 INFO L87 Difference]: Start difference. First operand 247 states and 265 transitions. Second operand 11 states. [2020-09-04 15:12:18,929 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:19,295 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:19,646 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:12:19,964 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:20,252 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:20,543 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:22,229 INFO L93 Difference]: Finished difference Result 450 states and 520 transitions. [2020-09-04 15:12:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:12:22,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-09-04 15:12:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:22,234 INFO L225 Difference]: With dead ends: 450 [2020-09-04 15:12:22,235 INFO L226 Difference]: Without dead ends: 318 [2020-09-04 15:12:22,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:12:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-09-04 15:12:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 247. [2020-09-04 15:12:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-04 15:12:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 264 transitions. [2020-09-04 15:12:22,361 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 264 transitions. Word has length 162 [2020-09-04 15:12:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:22,362 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 264 transitions. [2020-09-04 15:12:22,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 264 transitions. [2020-09-04 15:12:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 15:12:22,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:22,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:22,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:12:22,365 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:22,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1365821347, now seen corresponding path program 1 times [2020-09-04 15:12:22,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:22,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536735468] [2020-09-04 15:12:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:22,369 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,757 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:12:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:12:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-04 15:12:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-04 15:12:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:22,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536735468] [2020-09-04 15:12:22,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:22,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:12:22,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029647932] [2020-09-04 15:12:22,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:12:22,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:22,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:12:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:12:22,930 INFO L87 Difference]: Start difference. First operand 247 states and 264 transitions. Second operand 8 states. [2020-09-04 15:12:23,502 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:25,144 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:26,185 INFO L93 Difference]: Finished difference Result 629 states and 750 transitions. [2020-09-04 15:12:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:12:26,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2020-09-04 15:12:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:26,192 INFO L225 Difference]: With dead ends: 629 [2020-09-04 15:12:26,192 INFO L226 Difference]: Without dead ends: 497 [2020-09-04 15:12:26,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:12:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-09-04 15:12:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 356. [2020-09-04 15:12:26,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-09-04 15:12:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 385 transitions. [2020-09-04 15:12:26,324 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 385 transitions. Word has length 170 [2020-09-04 15:12:26,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:26,325 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 385 transitions. [2020-09-04 15:12:26,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:12:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 385 transitions. [2020-09-04 15:12:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 15:12:26,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:26,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:26,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:12:26,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:26,329 INFO L82 PathProgramCache]: Analyzing trace with hash -193373180, now seen corresponding path program 1 times [2020-09-04 15:12:26,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:26,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950686953] [2020-09-04 15:12:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:26,332 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,651 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:12:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:12:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 15:12:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 15:12:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:26,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950686953] [2020-09-04 15:12:26,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:26,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:12:26,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135321075] [2020-09-04 15:12:26,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:12:26,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:26,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:12:26,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:12:26,925 INFO L87 Difference]: Start difference. First operand 356 states and 385 transitions. Second operand 14 states. [2020-09-04 15:12:27,580 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:27,895 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:28,199 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:28,509 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:28,798 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:29,800 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:30,105 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:30,429 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:30,749 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:31,041 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:32,603 INFO L93 Difference]: Finished difference Result 743 states and 885 transitions. [2020-09-04 15:12:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:12:32,603 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 194 [2020-09-04 15:12:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:32,612 INFO L225 Difference]: With dead ends: 743 [2020-09-04 15:12:32,613 INFO L226 Difference]: Without dead ends: 502 [2020-09-04 15:12:32,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:12:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-09-04 15:12:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 362. [2020-09-04 15:12:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-09-04 15:12:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 391 transitions. [2020-09-04 15:12:32,742 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 391 transitions. Word has length 194 [2020-09-04 15:12:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:32,743 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 391 transitions. [2020-09-04 15:12:32,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:12:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 391 transitions. [2020-09-04 15:12:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 15:12:32,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:32,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:32,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:12:32,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:32,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:32,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1228867684, now seen corresponding path program 1 times [2020-09-04 15:12:32,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:32,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081897951] [2020-09-04 15:12:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:32,750 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,129 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:12:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:12:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 15:12:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 15:12:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:33,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081897951] [2020-09-04 15:12:33,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:33,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:33,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068095029] [2020-09-04 15:12:33,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:33,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:33,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:33,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:33,391 INFO L87 Difference]: Start difference. First operand 362 states and 391 transitions. Second operand 11 states. [2020-09-04 15:12:33,878 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:35,367 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:35,688 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:36,056 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:36,356 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:37,000 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:37,302 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:37,602 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:38,014 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:39,585 INFO L93 Difference]: Finished difference Result 1059 states and 1292 transitions. [2020-09-04 15:12:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:12:39,585 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2020-09-04 15:12:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:39,592 INFO L225 Difference]: With dead ends: 1059 [2020-09-04 15:12:39,592 INFO L226 Difference]: Without dead ends: 812 [2020-09-04 15:12:39,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-09-04 15:12:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-04 15:12:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 563. [2020-09-04 15:12:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-09-04 15:12:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 613 transitions. [2020-09-04 15:12:39,787 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 613 transitions. Word has length 194 [2020-09-04 15:12:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:39,788 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 613 transitions. [2020-09-04 15:12:39,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 613 transitions. [2020-09-04 15:12:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:12:39,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:39,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:39,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:12:39,791 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash -624986246, now seen corresponding path program 1 times [2020-09-04 15:12:39,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:39,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541622246] [2020-09-04 15:12:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:39,795 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,199 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:12:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:12:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 15:12:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 15:12:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:40,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541622246] [2020-09-04 15:12:40,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:40,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:12:40,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15503126] [2020-09-04 15:12:40,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:12:40,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:12:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:12:40,468 INFO L87 Difference]: Start difference. First operand 563 states and 613 transitions. Second operand 12 states. [2020-09-04 15:12:41,069 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:42,846 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:43,149 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:43,522 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:44,757 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:45,018 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:45,350 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:45,603 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:45,879 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:46,341 INFO L93 Difference]: Finished difference Result 1390 states and 1677 transitions. [2020-09-04 15:12:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 15:12:46,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 199 [2020-09-04 15:12:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:46,352 INFO L225 Difference]: With dead ends: 1390 [2020-09-04 15:12:46,353 INFO L226 Difference]: Without dead ends: 942 [2020-09-04 15:12:46,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=444, Invalid=1278, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 15:12:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-09-04 15:12:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 561. [2020-09-04 15:12:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-09-04 15:12:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 609 transitions. [2020-09-04 15:12:46,539 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 609 transitions. Word has length 199 [2020-09-04 15:12:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:46,540 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 609 transitions. [2020-09-04 15:12:46,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:12:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 609 transitions. [2020-09-04 15:12:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-04 15:12:46,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:46,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:46,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:12:46,545 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:46,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:46,545 INFO L82 PathProgramCache]: Analyzing trace with hash 173916020, now seen corresponding path program 1 times [2020-09-04 15:12:46,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:46,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956866602] [2020-09-04 15:12:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:46,548 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,916 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:12:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:12:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-04 15:12:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-04 15:12:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:47,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956866602] [2020-09-04 15:12:47,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:47,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:12:47,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319778232] [2020-09-04 15:12:47,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:12:47,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:12:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:12:47,156 INFO L87 Difference]: Start difference. First operand 561 states and 609 transitions. Second operand 12 states. [2020-09-04 15:12:48,591 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:48,902 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:49,225 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-04 15:12:49,523 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:49,833 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:50,115 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:51,979 INFO L93 Difference]: Finished difference Result 1402 states and 1728 transitions. [2020-09-04 15:12:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 15:12:51,980 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 222 [2020-09-04 15:12:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:51,987 INFO L225 Difference]: With dead ends: 1402 [2020-09-04 15:12:51,987 INFO L226 Difference]: Without dead ends: 956 [2020-09-04 15:12:51,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:12:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-09-04 15:12:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 577. [2020-09-04 15:12:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-09-04 15:12:52,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 625 transitions. [2020-09-04 15:12:52,154 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 625 transitions. Word has length 222 [2020-09-04 15:12:52,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:52,155 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 625 transitions. [2020-09-04 15:12:52,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:12:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 625 transitions. [2020-09-04 15:12:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-04 15:12:52,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:52,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:52,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:12:52,160 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash 993243665, now seen corresponding path program 1 times [2020-09-04 15:12:52,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:52,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485681895] [2020-09-04 15:12:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:52,164 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,583 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:12:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:12:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-04 15:12:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-04 15:12:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:52,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485681895] [2020-09-04 15:12:52,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:52,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:12:52,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418485382] [2020-09-04 15:12:52,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:12:52,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:52,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:12:52,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:12:52,843 INFO L87 Difference]: Start difference. First operand 577 states and 625 transitions. Second operand 9 states. [2020-09-04 15:12:53,402 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:54,110 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:57,677 INFO L93 Difference]: Finished difference Result 2101 states and 2656 transitions. [2020-09-04 15:12:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 15:12:57,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 222 [2020-09-04 15:12:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:57,687 INFO L225 Difference]: With dead ends: 2101 [2020-09-04 15:12:57,688 INFO L226 Difference]: Without dead ends: 1639 [2020-09-04 15:12:57,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=295, Invalid=1111, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 15:12:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-09-04 15:12:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 995. [2020-09-04 15:12:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-04 15:12:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1105 transitions. [2020-09-04 15:12:58,035 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1105 transitions. Word has length 222 [2020-09-04 15:12:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:58,035 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1105 transitions. [2020-09-04 15:12:58,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:12:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1105 transitions. [2020-09-04 15:12:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-04 15:12:58,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:58,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:58,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:12:58,040 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash -347403710, now seen corresponding path program 1 times [2020-09-04 15:12:58,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:58,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786200505] [2020-09-04 15:12:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:58,043 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,415 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:12:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:12:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:12:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-04 15:12:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:12:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 15:12:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:58,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786200505] [2020-09-04 15:12:58,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:58,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-09-04 15:12:58,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658454890] [2020-09-04 15:12:58,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 15:12:58,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:58,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 15:12:58,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-09-04 15:12:58,982 INFO L87 Difference]: Start difference. First operand 995 states and 1105 transitions. Second operand 22 states. [2020-09-04 15:12:59,657 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:00,108 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:13:00,435 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:13:00,768 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:01,086 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:13:01,391 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:02,536 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:04,230 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:04,587 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:05,012 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:05,363 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:05,701 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:06,032 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:06,356 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:06,738 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:07,108 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:07,541 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:07,896 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:08,328 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:09,054 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-04 15:13:09,852 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 193 [2020-09-04 15:13:10,566 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-04 15:13:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:13,916 INFO L93 Difference]: Finished difference Result 2464 states and 2979 transitions. [2020-09-04 15:13:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-04 15:13:13,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 227 [2020-09-04 15:13:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:13,926 INFO L225 Difference]: With dead ends: 2464 [2020-09-04 15:13:13,926 INFO L226 Difference]: Without dead ends: 1584 [2020-09-04 15:13:13,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1743 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1130, Invalid=4876, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 15:13:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-09-04 15:13:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 958. [2020-09-04 15:13:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2020-09-04 15:13:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1052 transitions. [2020-09-04 15:13:14,317 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1052 transitions. Word has length 227 [2020-09-04 15:13:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:14,318 INFO L479 AbstractCegarLoop]: Abstraction has 958 states and 1052 transitions. [2020-09-04 15:13:14,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 15:13:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1052 transitions. [2020-09-04 15:13:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-04 15:13:14,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:14,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:13:14,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:13:14,324 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:14,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:14,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1558548367, now seen corresponding path program 1 times [2020-09-04 15:13:14,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:14,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599615642] [2020-09-04 15:13:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:14,375 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,772 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:13:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:13:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:13:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:13:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:13:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:13:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:13:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:13:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:13:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:13:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:13:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:13:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:13:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:13:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-04 15:13:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-04 15:13:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-09-04 15:13:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-09-04 15:13:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 15:13:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-09-04 15:13:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:13:15,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599615642] [2020-09-04 15:13:15,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:13:15,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:13:15,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779014301] [2020-09-04 15:13:15,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:13:15,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:13:15,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:13:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:13:15,005 INFO L87 Difference]: Start difference. First operand 958 states and 1052 transitions. Second operand 10 states. [2020-09-04 15:13:15,593 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:19,786 INFO L93 Difference]: Finished difference Result 2412 states and 3019 transitions. [2020-09-04 15:13:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 15:13:19,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 279 [2020-09-04 15:13:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:19,799 INFO L225 Difference]: With dead ends: 2412 [2020-09-04 15:13:19,799 INFO L226 Difference]: Without dead ends: 2409 [2020-09-04 15:13:19,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 15:13:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-09-04 15:13:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 1449. [2020-09-04 15:13:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2020-09-04 15:13:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1601 transitions. [2020-09-04 15:13:20,575 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1601 transitions. Word has length 279 [2020-09-04 15:13:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:20,576 INFO L479 AbstractCegarLoop]: Abstraction has 1449 states and 1601 transitions. [2020-09-04 15:13:20,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:13:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1601 transitions. [2020-09-04 15:13:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-09-04 15:13:20,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:20,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:13:20,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:13:20,585 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1219323097, now seen corresponding path program 1 times [2020-09-04 15:13:20,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:20,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728434616] [2020-09-04 15:13:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:20,602 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:13:20,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:13:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:13:20,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:13:21,433 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:13:21,434 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:13:21,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 15:13:21,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:13:21 BoogieIcfgContainer [2020-09-04 15:13:21,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:13:21,492 INFO L168 Benchmark]: Toolchain (without parser) took 70870.92 ms. Allocated memory was 140.0 MB in the beginning and 982.0 MB in the end (delta: 842.0 MB). Free memory was 103.3 MB in the beginning and 573.5 MB in the end (delta: -470.2 MB). Peak memory consumption was 371.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:21,493 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-04 15:13:21,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.24 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 173.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:21,499 INFO L168 Benchmark]: Boogie Preprocessor took 123.00 ms. Allocated memory is still 204.5 MB. Free memory was 173.0 MB in the beginning and 168.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:21,502 INFO L168 Benchmark]: RCFGBuilder took 1389.26 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 168.1 MB in the beginning and 174.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:21,504 INFO L168 Benchmark]: TraceAbstraction took 68668.14 ms. Allocated memory was 235.9 MB in the beginning and 982.0 MB in the end (delta: 746.1 MB). Free memory was 174.3 MB in the beginning and 573.5 MB in the end (delta: -399.2 MB). Peak memory consumption was 346.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:21,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.24 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 173.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.00 ms. Allocated memory is still 204.5 MB. Free memory was 173.0 MB in the beginning and 168.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1389.26 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 168.1 MB in the beginning and 174.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 68668.14 ms. Allocated memory was 235.9 MB in the beginning and 982.0 MB in the end (delta: 746.1 MB). Free memory was 174.3 MB in the beginning and 573.5 MB in the end (delta: -399.2 MB). Peak memory consumption was 346.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 844]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L486] int pumpRunning = 0; [L487] int systemActive = 1; [L666] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L850] int waterLevel = 1; [L851] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L734] int retValue_acc ; [L737] retValue_acc = 1 [L738] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L671] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L412] int splverifierCounter ; [L413] int tmp ; [L414] int tmp___0 ; [L415] int tmp___1 ; [L416] int tmp___2 ; [L419] splverifierCounter = 0 [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp) [L433] CALL waterRise() [L868] COND TRUE waterLevel < 2 [L869] waterLevel = waterLevel + 1 [L433] RET waterRise() [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___2) [L453] CALL startSystem() [L660] systemActive = 1 [L453] RET startSystem() [L466] CALL timeShift() [L494] COND FALSE !(\read(pumpRunning)) [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND TRUE ! pumpRunning [L528] CALL, EXPR isHighWaterLevel() [L638] int retValue_acc ; [L639] int tmp ; [L640] int tmp___0 ; [L644] CALL, EXPR isHighWaterSensorDry() [L930] int retValue_acc ; [L933] COND FALSE !(waterLevel < 2) [L937] retValue_acc = 0 [L938] return (retValue_acc); [L644] RET, EXPR isHighWaterSensorDry() [L644] tmp = isHighWaterSensorDry() [L646] COND FALSE !(\read(tmp)) [L649] tmp___0 = 1 [L651] retValue_acc = tmp___0 [L652] return (retValue_acc); [L528] RET, EXPR isHighWaterLevel() [L528] tmp = isHighWaterLevel() [L530] COND TRUE \read(tmp) [L532] CALL activatePump() [L557] int tmp ; [L561] CALL, EXPR isMethaneAlarm() [L582] int retValue_acc ; [L586] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L586] RET, EXPR isMethaneLevelCritical() [L586] retValue_acc = isMethaneLevelCritical() [L588] return (retValue_acc); [L561] RET, EXPR isMethaneAlarm() [L561] tmp = isMethaneAlarm() [L563] COND FALSE !(\read(tmp)) [L567] CALL activatePump__wrappee__highWaterSensor() [L551] pumpRunning = 1 [L567] RET activatePump__wrappee__highWaterSensor() [L532] RET activatePump() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND FALSE !(\read(tmp)) [L699] methAndRunningLastTime = 0 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp___0) [L443] CALL changeMethaneLevel() [L880] COND FALSE !(\read(methaneLevelCritical)) [L883] methaneLevelCritical = 1 [L443] RET changeMethaneLevel() [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___2) [L453] CALL startSystem() [L660] systemActive = 1 [L453] RET startSystem() [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND FALSE !(\read(methAndRunningLastTime)) [L693] methAndRunningLastTime = 1 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___2) [L453] CALL startSystem() [L660] systemActive = 1 [L453] RET startSystem() [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND TRUE \read(methAndRunningLastTime) [L690] CALL __automaton_fail() [L844] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 68.5s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 57.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2829 SDtfs, 10796 SDslu, 7396 SDs, 0 SdLazy, 14926 SolverSat, 3572 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 709 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3453 ImplicationChecksByTransitivity, 26.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1449occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 3688 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...