/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:11:35,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:11:35,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:11:35,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:11:35,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:11:35,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:11:35,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:11:35,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:11:35,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:11:35,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:11:35,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:11:35,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:11:35,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:11:35,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:11:35,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:11:35,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:11:35,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:11:35,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:11:35,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:11:35,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:11:35,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:11:35,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:11:35,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:11:35,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:11:35,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:11:35,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:11:35,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:11:35,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:11:35,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:11:35,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:11:35,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:11:35,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:11:35,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:11:35,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:11:35,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:11:35,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:11:35,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:11:35,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:11:35,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:11:35,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:11:35,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:11:35,282 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 15:11:35,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:11:35,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:11:35,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:11:35,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:11:35,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:11:35,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:11:35,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:11:35,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:11:35,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:11:35,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:11:35,303 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:11:35,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:11:35,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:11:35,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:11:35,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:11:35,304 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:11:35,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:11:35,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:11:35,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:11:35,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:11:35,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:11:35,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:11:35,306 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:11:35,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:11:35,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:11:35,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:11:35,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:11:35,785 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:11:35,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-09-04 15:11:35,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302a63e95/f1e0e0860fb54a9c99aa28095116d77a/FLAG0a41b7f07 [2020-09-04 15:11:36,484 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:11:36,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-09-04 15:11:36,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302a63e95/f1e0e0860fb54a9c99aa28095116d77a/FLAG0a41b7f07 [2020-09-04 15:11:36,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302a63e95/f1e0e0860fb54a9c99aa28095116d77a [2020-09-04 15:11:36,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:11:36,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:11:36,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:11:36,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:11:36,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:11:36,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:11:36" (1/1) ... [2020-09-04 15:11:36,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc2875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:36, skipping insertion in model container [2020-09-04 15:11:36,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:11:36" (1/1) ... [2020-09-04 15:11:36,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:11:36,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:11:37,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:11:37,397 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:11:37,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:11:37,509 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:11:37,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37 WrapperNode [2020-09-04 15:11:37,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:11:37,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:11:37,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:11:37,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:11:37,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:11:37,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:11:37,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:11:37,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:11:37,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (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 15:11:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:11:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:11:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:11:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:11:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:11:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:11:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:11:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:11:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:11:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:11:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:11:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:11:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:11:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:11:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:11:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:11:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:11:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:11:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:11:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:11:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:11:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:11:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:11:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:11:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:11:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:11:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:11:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:11:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:11:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:11:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:11:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:11:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:11:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:11:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:11:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:11:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:11:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:11:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:11:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:11:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:11:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:11:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:11:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:11:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:11:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:11:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:11:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:11:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:11:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:11:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:11:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:11:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:11:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:11:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:11:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:11:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:11:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:11:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:11:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:11:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:11:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:11:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:11:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:11:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:11:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:11:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:11:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:11:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:11:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:11:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:11:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:11:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:11:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:11:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:11:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:11:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:11:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:11:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:11:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:11:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:11:38,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:11:38,918 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:11:38,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:11:38 BoogieIcfgContainer [2020-09-04 15:11:38,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:11:38,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:11:38,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:11:38,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:11:38,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:11:36" (1/3) ... [2020-09-04 15:11:38,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6780ba8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:11:38, skipping insertion in model container [2020-09-04 15:11:38,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37" (2/3) ... [2020-09-04 15:11:38,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6780ba8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:11:38, skipping insertion in model container [2020-09-04 15:11:38,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:11:38" (3/3) ... [2020-09-04 15:11:38,938 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-09-04 15:11:38,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:11:38,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:11:38,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:11:39,018 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:11:39,018 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:11:39,018 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:11:39,019 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:11:39,019 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:11:39,019 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:11:39,019 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:11:39,019 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:11:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-09-04 15:11:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-04 15:11:39,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:39,067 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 15:11:39,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:39,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1842377824, now seen corresponding path program 1 times [2020-09-04 15:11:39,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:39,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924468776] [2020-09-04 15:11:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:39,181 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:39,939 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:11:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,138 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 15:11:40,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924468776] [2020-09-04 15:11:40,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:40,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:11:40,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829608809] [2020-09-04 15:11:40,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:11:40,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:40,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:11:40,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:11:40,171 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 4 states. [2020-09-04 15:11:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:41,472 INFO L93 Difference]: Finished difference Result 453 states and 537 transitions. [2020-09-04 15:11:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 15:11:41,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-04 15:11:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:41,493 INFO L225 Difference]: With dead ends: 453 [2020-09-04 15:11:41,493 INFO L226 Difference]: Without dead ends: 293 [2020-09-04 15:11:41,499 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 15:11:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-04 15:11:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 245. [2020-09-04 15:11:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-04 15:11:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 265 transitions. [2020-09-04 15:11:41,635 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 265 transitions. Word has length 148 [2020-09-04 15:11:41,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:41,636 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 265 transitions. [2020-09-04 15:11:41,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:11:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2020-09-04 15:11:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 15:11:41,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:41,641 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 15:11:41,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:11:41,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:41,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:41,642 INFO L82 PathProgramCache]: Analyzing trace with hash 983801139, now seen corresponding path program 1 times [2020-09-04 15:11:41,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:41,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011313605] [2020-09-04 15:11:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:41,646 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,021 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:11:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:11:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,160 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 15:11:42,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011313605] [2020-09-04 15:11:42,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:42,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:11:42,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77393872] [2020-09-04 15:11:42,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:11:42,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:42,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:11:42,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:11:42,166 INFO L87 Difference]: Start difference. First operand 245 states and 265 transitions. Second operand 5 states. [2020-09-04 15:11:42,900 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:43,856 INFO L93 Difference]: Finished difference Result 373 states and 422 transitions. [2020-09-04 15:11:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:11:43,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-04 15:11:43,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:43,862 INFO L225 Difference]: With dead ends: 373 [2020-09-04 15:11:43,862 INFO L226 Difference]: Without dead ends: 282 [2020-09-04 15:11:43,865 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 15:11:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-04 15:11:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 235. [2020-09-04 15:11:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-04 15:11:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 252 transitions. [2020-09-04 15:11:43,926 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 252 transitions. Word has length 149 [2020-09-04 15:11:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:43,927 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 252 transitions. [2020-09-04 15:11:43,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:11:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 252 transitions. [2020-09-04 15:11:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-04 15:11:43,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:43,929 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] [2020-09-04 15:11:43,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:11:43,930 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1583247536, now seen corresponding path program 1 times [2020-09-04 15:11:43,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:43,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375408594] [2020-09-04 15:11:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:43,933 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,350 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:44,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:11:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:11:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,589 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 15:11:44,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375408594] [2020-09-04 15:11:44,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:44,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:11:44,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112434823] [2020-09-04 15:11:44,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:11:44,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:44,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:11:44,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:11:44,592 INFO L87 Difference]: Start difference. First operand 235 states and 252 transitions. Second operand 10 states. [2020-09-04 15:11:45,107 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:45,510 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:11:45,844 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:11:46,165 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:46,481 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:46,771 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:47,832 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:49,791 INFO L93 Difference]: Finished difference Result 616 states and 713 transitions. [2020-09-04 15:11:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:11:49,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-04 15:11:49,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:49,798 INFO L225 Difference]: With dead ends: 616 [2020-09-04 15:11:49,798 INFO L226 Difference]: Without dead ends: 496 [2020-09-04 15:11:49,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:11:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-09-04 15:11:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 411. [2020-09-04 15:11:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-09-04 15:11:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 456 transitions. [2020-09-04 15:11:49,954 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 456 transitions. Word has length 158 [2020-09-04 15:11:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:49,955 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 456 transitions. [2020-09-04 15:11:49,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:11:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 456 transitions. [2020-09-04 15:11:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:11:49,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:49,958 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] [2020-09-04 15:11:49,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:11:49,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash -247370093, now seen corresponding path program 1 times [2020-09-04 15:11:49,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:49,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840924365] [2020-09-04 15:11:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:49,962 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,319 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:11:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:11:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-04 15:11:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 15:11:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:50,538 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 15:11:50,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840924365] [2020-09-04 15:11:50,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:50,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:11:50,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883956242] [2020-09-04 15:11:50,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:11:50,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:50,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:11:50,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:11:50,541 INFO L87 Difference]: Start difference. First operand 411 states and 456 transitions. Second operand 7 states. [2020-09-04 15:11:51,045 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:52,918 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:53,569 INFO L93 Difference]: Finished difference Result 1041 states and 1238 transitions. [2020-09-04 15:11:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:11:53,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-04 15:11:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:53,576 INFO L225 Difference]: With dead ends: 1041 [2020-09-04 15:11:53,577 INFO L226 Difference]: Without dead ends: 745 [2020-09-04 15:11:53,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:11:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-09-04 15:11:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 617. [2020-09-04 15:11:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-09-04 15:11:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 686 transitions. [2020-09-04 15:11:53,807 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 686 transitions. Word has length 166 [2020-09-04 15:11:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:53,808 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 686 transitions. [2020-09-04 15:11:53,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:11:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 686 transitions. [2020-09-04 15:11:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:11:53,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:53,811 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] [2020-09-04 15:11:53,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:11:53,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash 662442186, now seen corresponding path program 1 times [2020-09-04 15:11:53,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:53,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747219651] [2020-09-04 15:11:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:53,815 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,207 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:11:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:11:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:11:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:54,372 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 15:11:54,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747219651] [2020-09-04 15:11:54,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:54,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:11:54,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462659442] [2020-09-04 15:11:54,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:11:54,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:54,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:11:54,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:11:54,374 INFO L87 Difference]: Start difference. First operand 617 states and 686 transitions. Second operand 10 states. [2020-09-04 15:11:54,916 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:56,169 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:56,496 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:56,844 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:57,184 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:57,499 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:57,815 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:58,120 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:58,638 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:00,310 INFO L93 Difference]: Finished difference Result 1664 states and 1961 transitions. [2020-09-04 15:12:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:12:00,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:12:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:00,326 INFO L225 Difference]: With dead ends: 1664 [2020-09-04 15:12:00,326 INFO L226 Difference]: Without dead ends: 1162 [2020-09-04 15:12:00,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:12:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-09-04 15:12:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1015. [2020-09-04 15:12:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-04 15:12:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1133 transitions. [2020-09-04 15:12:00,696 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1133 transitions. Word has length 167 [2020-09-04 15:12:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:00,697 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1133 transitions. [2020-09-04 15:12:00,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:12:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1133 transitions. [2020-09-04 15:12:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:12:00,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:00,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:00,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:12:00,700 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2046553612, now seen corresponding path program 1 times [2020-09-04 15:12:00,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:00,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773256074] [2020-09-04 15:12:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:00,704 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,056 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:12:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:12:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:12:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:01,230 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 15:12:01,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773256074] [2020-09-04 15:12:01,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:01,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:01,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906745264] [2020-09-04 15:12:01,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:01,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:01,234 INFO L87 Difference]: Start difference. First operand 1015 states and 1133 transitions. Second operand 11 states. [2020-09-04 15:12:01,825 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:03,370 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:03,702 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:04,100 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:04,443 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:04,750 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:05,414 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:05,685 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:06,053 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:07,151 INFO L93 Difference]: Finished difference Result 2185 states and 2551 transitions. [2020-09-04 15:12:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 15:12:07,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-09-04 15:12:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:07,160 INFO L225 Difference]: With dead ends: 2185 [2020-09-04 15:12:07,161 INFO L226 Difference]: Without dead ends: 1285 [2020-09-04 15:12:07,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 15:12:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2020-09-04 15:12:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1009. [2020-09-04 15:12:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-09-04 15:12:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1121 transitions. [2020-09-04 15:12:07,462 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1121 transitions. Word has length 172 [2020-09-04 15:12:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:07,463 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1121 transitions. [2020-09-04 15:12:07,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1121 transitions. [2020-09-04 15:12:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-04 15:12:07,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:07,467 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] [2020-09-04 15:12:07,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:12:07,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1482697685, now seen corresponding path program 1 times [2020-09-04 15:12:07,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:07,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717690946] [2020-09-04 15:12:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:07,471 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,767 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:07,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-04 15:12:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 15:12:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:08,068 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 15:12:08,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717690946] [2020-09-04 15:12:08,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:08,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:08,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568015463] [2020-09-04 15:12:08,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:08,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:08,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:08,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:08,074 INFO L87 Difference]: Start difference. First operand 1009 states and 1121 transitions. Second operand 11 states. [2020-09-04 15:12:09,653 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:09,980 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:10,321 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-04 15:12:10,654 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:11,007 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:11,311 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:12,667 INFO L93 Difference]: Finished difference Result 2323 states and 2761 transitions. [2020-09-04 15:12:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:12:12,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 196 [2020-09-04 15:12:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:12,682 INFO L225 Difference]: With dead ends: 2323 [2020-09-04 15:12:12,682 INFO L226 Difference]: Without dead ends: 1429 [2020-09-04 15:12:12,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:12:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-09-04 15:12:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1041. [2020-09-04 15:12:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-09-04 15:12:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1153 transitions. [2020-09-04 15:12:12,979 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1153 transitions. Word has length 196 [2020-09-04 15:12:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:12,980 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1153 transitions. [2020-09-04 15:12:12,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1153 transitions. [2020-09-04 15:12:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-04 15:12:12,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:12,984 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] [2020-09-04 15:12:12,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:12:12,984 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:12,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1672475787, now seen corresponding path program 1 times [2020-09-04 15:12:12,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:12,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444753939] [2020-09-04 15:12:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:12,988 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,407 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-04 15:12:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 15:12:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:13,644 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 15:12:13,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444753939] [2020-09-04 15:12:13,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:13,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:12:13,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726000797] [2020-09-04 15:12:13,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:12:13,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:12:13,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:12:13,647 INFO L87 Difference]: Start difference. First operand 1041 states and 1153 transitions. Second operand 14 states. [2020-09-04 15:12:14,381 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:14,704 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:15,013 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:15,324 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:15,622 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:16,682 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:17,004 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:17,346 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:17,695 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:18,008 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:19,741 INFO L93 Difference]: Finished difference Result 2399 states and 2874 transitions. [2020-09-04 15:12:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:12:19,742 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-09-04 15:12:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:19,750 INFO L225 Difference]: With dead ends: 2399 [2020-09-04 15:12:19,750 INFO L226 Difference]: Without dead ends: 1473 [2020-09-04 15:12:19,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:12:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-09-04 15:12:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1065. [2020-09-04 15:12:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-09-04 15:12:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1177 transitions. [2020-09-04 15:12:20,288 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1177 transitions. Word has length 196 [2020-09-04 15:12:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:20,289 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1177 transitions. [2020-09-04 15:12:20,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:12:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1177 transitions. [2020-09-04 15:12:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-04 15:12:20,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:20,293 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] [2020-09-04 15:12:20,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:12:20,293 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:20,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:20,294 INFO L82 PathProgramCache]: Analyzing trace with hash -458646904, now seen corresponding path program 1 times [2020-09-04 15:12:20,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:20,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378132901] [2020-09-04 15:12:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:20,296 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,639 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-04 15:12:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 15:12:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,814 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 15:12:20,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378132901] [2020-09-04 15:12:20,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:20,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:12:20,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30657873] [2020-09-04 15:12:20,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:12:20,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:20,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:12:20,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:12:20,816 INFO L87 Difference]: Start difference. First operand 1065 states and 1177 transitions. Second operand 8 states. [2020-09-04 15:12:21,370 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:22,076 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:24,912 INFO L93 Difference]: Finished difference Result 3607 states and 4400 transitions. [2020-09-04 15:12:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 15:12:24,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-09-04 15:12:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:24,928 INFO L225 Difference]: With dead ends: 3607 [2020-09-04 15:12:24,928 INFO L226 Difference]: Without dead ends: 2657 [2020-09-04 15:12:24,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:12:24,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2020-09-04 15:12:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2107. [2020-09-04 15:12:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2107 states. [2020-09-04 15:12:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2383 transitions. [2020-09-04 15:12:25,871 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2383 transitions. Word has length 196 [2020-09-04 15:12:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:25,872 INFO L479 AbstractCegarLoop]: Abstraction has 2107 states and 2383 transitions. [2020-09-04 15:12:25,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:12:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2383 transitions. [2020-09-04 15:12:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-04 15:12:25,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:25,879 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, 1, 1] [2020-09-04 15:12:25,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:12:25,880 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:25,880 INFO L82 PathProgramCache]: Analyzing trace with hash 738354595, now seen corresponding path program 1 times [2020-09-04 15:12:25,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:25,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292108819] [2020-09-04 15:12:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:25,888 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,239 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:12:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:12:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:12:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 15:12:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 15:12:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,392 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 15:12:26,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292108819] [2020-09-04 15:12:26,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:26,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:12:26,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579871578] [2020-09-04 15:12:26,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:12:26,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:26,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:12:26,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:12:26,395 INFO L87 Difference]: Start difference. First operand 2107 states and 2383 transitions. Second operand 8 states. [2020-09-04 15:12:26,970 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:30,794 INFO L93 Difference]: Finished difference Result 4169 states and 5064 transitions. [2020-09-04 15:12:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 15:12:30,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-04 15:12:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:30,816 INFO L225 Difference]: With dead ends: 4169 [2020-09-04 15:12:30,817 INFO L226 Difference]: Without dead ends: 4166 [2020-09-04 15:12:30,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-09-04 15:12:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2020-09-04 15:12:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3255. [2020-09-04 15:12:31,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3255 states. [2020-09-04 15:12:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3255 states to 3255 states and 3701 transitions. [2020-09-04 15:12:31,849 INFO L78 Accepts]: Start accepts. Automaton has 3255 states and 3701 transitions. Word has length 201 [2020-09-04 15:12:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:31,850 INFO L479 AbstractCegarLoop]: Abstraction has 3255 states and 3701 transitions. [2020-09-04 15:12:31,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:12:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3255 states and 3701 transitions. [2020-09-04 15:12:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-04 15:12:31,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:31,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:31,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:12:31,860 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:31,860 INFO L82 PathProgramCache]: Analyzing trace with hash 851018372, now seen corresponding path program 1 times [2020-09-04 15:12:31,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:31,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898623697] [2020-09-04 15:12:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:31,907 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:12:31,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:12:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:12:32,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:12:32,331 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:12:32,331 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:12:32,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:12:32,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:12:32 BoogieIcfgContainer [2020-09-04 15:12:32,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:12:32,365 INFO L168 Benchmark]: Toolchain (without parser) took 55563.34 ms. Allocated memory was 136.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 100.0 MB in the beginning and 787.7 MB in the end (delta: -687.7 MB). Peak memory consumption was 429.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:32,366 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:12:32,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.49 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 167.7 MB in the end (delta: -67.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:32,367 INFO L168 Benchmark]: Boogie Preprocessor took 94.47 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 163.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:32,368 INFO L168 Benchmark]: RCFGBuilder took 1323.92 ms. Allocated memory was 200.8 MB in the beginning and 230.2 MB in the end (delta: 29.4 MB). Free memory was 163.5 MB in the beginning and 173.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:32,369 INFO L168 Benchmark]: TraceAbstraction took 53433.10 ms. Allocated memory was 230.2 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 173.1 MB in the beginning and 787.7 MB in the end (delta: -614.5 MB). Peak memory consumption was 409.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:32,372 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.49 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 167.7 MB in the end (delta: -67.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.47 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 163.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1323.92 ms. Allocated memory was 200.8 MB in the beginning and 230.2 MB in the end (delta: 29.4 MB). Free memory was 163.5 MB in the beginning and 173.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53433.10 ms. Allocated memory was 230.2 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 173.1 MB in the beginning and 787.7 MB in the end (delta: -614.5 MB). Peak memory consumption was 409.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 736]: 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; [L416] int pumpRunning = 0; [L417] int systemActive = 1; [L655] int methAndRunningLastTime ; [L741] int cleanupTimeShifts = 4; [L839] int waterLevel = 1; [L840] int methaneLevelCritical = 0; [L815] int retValue_acc ; [L816] int tmp ; [L820] FCALL select_helpers() [L821] FCALL select_features() [L822] CALL, EXPR valid_product() [L723] int retValue_acc ; [L726] retValue_acc = 1 [L727] return (retValue_acc); [L822] RET, EXPR valid_product() [L822] tmp = valid_product() [L824] COND TRUE \read(tmp) [L826] FCALL setup() [L827] CALL runTest() [L808] CALL __utac_acc__Specification2_spec__1() [L660] methAndRunningLastTime = 0 [L808] RET __utac_acc__Specification2_spec__1() [L809] CALL test() [L588] int splverifierCounter ; [L589] int tmp ; [L590] int tmp___0 ; [L591] int tmp___1 ; [L592] int tmp___2 ; [L595] splverifierCounter = 0 [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp) [L609] CALL waterRise() [L857] COND TRUE waterLevel < 2 [L858] waterLevel = waterLevel + 1 [L609] RET waterRise() [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND TRUE \read(tmp___0) [L619] CALL changeMethaneLevel() [L869] COND FALSE !(\read(methaneLevelCritical)) [L872] methaneLevelCritical = 1 [L619] RET changeMethaneLevel() [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND FALSE !(\read(pumpRunning)) [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND TRUE ! pumpRunning [L458] CALL, EXPR isHighWaterLevel() [L550] int retValue_acc ; [L551] int tmp ; [L552] int tmp___0 ; [L556] CALL, EXPR isHighWaterSensorDry() [L919] int retValue_acc ; [L922] COND FALSE !(waterLevel < 2) [L926] retValue_acc = 0 [L927] return (retValue_acc); [L556] RET, EXPR isHighWaterSensorDry() [L556] tmp = isHighWaterSensorDry() [L558] COND FALSE !(\read(tmp)) [L561] tmp___0 = 1 [L563] retValue_acc = tmp___0 [L564] return (retValue_acc); [L458] RET, EXPR isHighWaterLevel() [L458] tmp = isHighWaterLevel() [L460] COND TRUE \read(tmp) [L462] CALL activatePump() [L481] pumpRunning = 1 [L462] RET activatePump() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND FALSE !(\read(methAndRunningLastTime)) [L682] methAndRunningLastTime = 1 [L439] RET __utac_acc__Specification2_spec__2() [L642] RET timeShift() [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND FALSE !(\read(tmp)) [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND FALSE !(\read(tmp___0)) [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND TRUE \read(pumpRunning) [L426] CALL lowerWaterLevel() [L845] COND TRUE waterLevel > 0 [L846] waterLevel = waterLevel - 1 [L426] RET lowerWaterLevel() [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND FALSE !(! pumpRunning) [L471] FCALL processEnvironment__wrappee__base() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND TRUE \read(methAndRunningLastTime) [L679] CALL __automaton_fail() [L736] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.3s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 42.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2309 SDtfs, 6785 SDslu, 4479 SDs, 0 SdLazy, 8736 SolverSat, 2041 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3255occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 2988 StatesRemovedByMinimization, 10 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...