/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_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:25:41,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:25:41,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:25:41,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:25:41,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:25:41,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:25:41,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:25:41,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:25:41,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:25:41,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:25:41,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:25:41,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:25:41,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:25:41,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:25:41,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:25:41,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:25:41,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:25:41,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:25:41,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:25:41,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:25:41,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:25:41,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:25:41,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:25:41,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:25:41,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:25:41,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:25:41,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:25:41,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:25:41,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:25:41,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:25:41,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:25:41,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:25:41,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:25:41,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:25:41,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:25:41,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:25:41,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:25:41,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:25:41,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:25:41,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:25:41,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:25:41,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:25:41,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:25:41,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:25:41,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:25:41,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:25:41,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:25:41,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:25:41,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:25:41,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:25:41,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:25:41,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:25:41,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:25:41,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:25:41,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:25:41,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:25:41,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:25:41,527 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:25:41,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:25:41,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:25:41,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:25:41,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:25:41,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:25:41,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:25:41,529 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:25:41,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:25:41,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:25:41,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:25:41,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:25:41,825 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:25:41,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-07 12:25:41,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50198bfd/3477c5d6e237402cbc59c273a3aa4344/FLAG1ea5dbe42 [2020-07-07 12:25:42,486 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:25:42,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-07 12:25:42,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50198bfd/3477c5d6e237402cbc59c273a3aa4344/FLAG1ea5dbe42 [2020-07-07 12:25:42,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50198bfd/3477c5d6e237402cbc59c273a3aa4344 [2020-07-07 12:25:42,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:25:42,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:25:42,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:42,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:25:42,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:25:42,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:42" (1/1) ... [2020-07-07 12:25:42,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e665a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:42, skipping insertion in model container [2020-07-07 12:25:42,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:42" (1/1) ... [2020-07-07 12:25:42,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:25:42,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:25:43,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:43,462 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:25:43,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:43,632 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:25:43,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43 WrapperNode [2020-07-07 12:25:43,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:43,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:25:43,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:25:43,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:25:43,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... [2020-07-07 12:25:43,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... [2020-07-07 12:25:43,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... [2020-07-07 12:25:43,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... [2020-07-07 12:25:43,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... [2020-07-07 12:25:43,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... [2020-07-07 12:25:43,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... [2020-07-07 12:25:43,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:25:43,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:25:43,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:25:43,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:25:43,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:25:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:25:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:25:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:25:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:25:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:25:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:25:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:25:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:25:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:25:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:25:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:25:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 12:25:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:25:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:25:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:25:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:25:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:25:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:25:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:25:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-07 12:25:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:25:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:25:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:25:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:25:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:25:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:25:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:25:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:25:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:25:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:25:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:25:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:25:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:25:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:25:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:25:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-07 12:25:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:25:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:25:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:25:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:25:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:25:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:25:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:25:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:25:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:25:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:25:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:25:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:25:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:25:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:25:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:25:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:25:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:25:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:25:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:25:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:25:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:25:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:25:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-07 12:25:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:25:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:25:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:25:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:25:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:25:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:25:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-07 12:25:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 12:25:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:25:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:25:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:25:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:25:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:25:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:25:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:25:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:25:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:25:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:25:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:25:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:25:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:25:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:25:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:25:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:25:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:25:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:25:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:25:44,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:25:44,979 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:25:44,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:44 BoogieIcfgContainer [2020-07-07 12:25:44,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:25:44,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:25:44,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:25:44,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:25:44,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:25:42" (1/3) ... [2020-07-07 12:25:44,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ccf34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:44, skipping insertion in model container [2020-07-07 12:25:44,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:43" (2/3) ... [2020-07-07 12:25:44,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ccf34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:44, skipping insertion in model container [2020-07-07 12:25:44,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:44" (3/3) ... [2020-07-07 12:25:44,996 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-07-07 12:25:45,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:25:45,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:25:45,033 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:25:45,058 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:25:45,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:25:45,058 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:25:45,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:25:45,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:25:45,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:25:45,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:25:45,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:25:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-07-07 12:25:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:25:45,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:45,106 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] [2020-07-07 12:25:45,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:45,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1442746419, now seen corresponding path program 1 times [2020-07-07 12:25:45,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:45,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989696976] [2020-07-07 12:25:45,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:45,918 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:46,120 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:46,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989696976] [2020-07-07 12:25:46,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:46,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:25:46,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416585354] [2020-07-07 12:25:46,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:25:46,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:46,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:25:46,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:46,149 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 3 states. [2020-07-07 12:25:47,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:47,577 INFO L93 Difference]: Finished difference Result 540 states and 643 transitions. [2020-07-07 12:25:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:25:47,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:25:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:47,598 INFO L225 Difference]: With dead ends: 540 [2020-07-07 12:25:47,599 INFO L226 Difference]: Without dead ends: 329 [2020-07-07 12:25:47,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:47,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-07-07 12:25:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 285. [2020-07-07 12:25:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-07-07 12:25:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 312 transitions. [2020-07-07 12:25:47,769 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 312 transitions. Word has length 142 [2020-07-07 12:25:47,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:47,770 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 312 transitions. [2020-07-07 12:25:47,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:25:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 312 transitions. [2020-07-07 12:25:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:25:47,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:47,776 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] [2020-07-07 12:25:47,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:25:47,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:47,777 INFO L82 PathProgramCache]: Analyzing trace with hash -221358713, now seen corresponding path program 1 times [2020-07-07 12:25:47,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:47,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107849809] [2020-07-07 12:25:47,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,178 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:48,248 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:48,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107849809] [2020-07-07 12:25:48,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:48,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:25:48,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566595307] [2020-07-07 12:25:48,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:25:48,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:48,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:25:48,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:25:48,251 INFO L87 Difference]: Start difference. First operand 285 states and 312 transitions. Second operand 4 states. [2020-07-07 12:25:48,828 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:50,030 INFO L93 Difference]: Finished difference Result 453 states and 514 transitions. [2020-07-07 12:25:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:25:50,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:25:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:50,036 INFO L225 Difference]: With dead ends: 453 [2020-07-07 12:25:50,036 INFO L226 Difference]: Without dead ends: 312 [2020-07-07 12:25:50,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:25:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-07-07 12:25:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 275. [2020-07-07 12:25:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-07 12:25:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 299 transitions. [2020-07-07 12:25:50,122 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 299 transitions. Word has length 143 [2020-07-07 12:25:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:50,123 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 299 transitions. [2020-07-07 12:25:50,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:25:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 299 transitions. [2020-07-07 12:25:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:25:50,126 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:50,126 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] [2020-07-07 12:25:50,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:25:50,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash 983862452, now seen corresponding path program 1 times [2020-07-07 12:25:50,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:50,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009042901] [2020-07-07 12:25:50,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,471 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:50,607 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:50,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009042901] [2020-07-07 12:25:50,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:50,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:50,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730805688] [2020-07-07 12:25:50,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:50,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:50,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:50,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:50,610 INFO L87 Difference]: Start difference. First operand 275 states and 299 transitions. Second operand 10 states. [2020-07-07 12:25:51,252 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:51,575 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:51,857 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:25:52,096 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:52,343 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:52,575 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:54,444 INFO L93 Difference]: Finished difference Result 499 states and 576 transitions. [2020-07-07 12:25:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:25:54,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:25:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:54,449 INFO L225 Difference]: With dead ends: 499 [2020-07-07 12:25:54,450 INFO L226 Difference]: Without dead ends: 334 [2020-07-07 12:25:54,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:25:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-07-07 12:25:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 275. [2020-07-07 12:25:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-07 12:25:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 298 transitions. [2020-07-07 12:25:54,538 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 298 transitions. Word has length 156 [2020-07-07 12:25:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:54,539 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 298 transitions. [2020-07-07 12:25:54,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 298 transitions. [2020-07-07 12:25:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-07-07 12:25:54,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:54,542 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] [2020-07-07 12:25:54,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:25:54,543 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash -311994909, now seen corresponding path program 1 times [2020-07-07 12:25:54,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:54,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377030841] [2020-07-07 12:25:54,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,837 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:55,007 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:55,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377030841] [2020-07-07 12:25:55,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:55,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 12:25:55,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576648694] [2020-07-07 12:25:55,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 12:25:55,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:55,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 12:25:55,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:25:55,011 INFO L87 Difference]: Start difference. First operand 275 states and 298 transitions. Second operand 7 states. [2020-07-07 12:25:55,540 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:57,017 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:57,922 INFO L93 Difference]: Finished difference Result 685 states and 813 transitions. [2020-07-07 12:25:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 12:25:57,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-07-07 12:25:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:57,928 INFO L225 Difference]: With dead ends: 685 [2020-07-07 12:25:57,928 INFO L226 Difference]: Without dead ends: 520 [2020-07-07 12:25:57,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:25:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-07-07 12:25:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 393. [2020-07-07 12:25:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-07-07 12:25:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 423 transitions. [2020-07-07 12:25:58,078 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 423 transitions. Word has length 174 [2020-07-07 12:25:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:58,079 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 423 transitions. [2020-07-07 12:25:58,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 12:25:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 423 transitions. [2020-07-07 12:25:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-07 12:25:58,082 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:58,082 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] [2020-07-07 12:25:58,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:25:58,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:58,083 INFO L82 PathProgramCache]: Analyzing trace with hash 236159680, now seen corresponding path program 1 times [2020-07-07 12:25:58,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:58,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414409553] [2020-07-07 12:25:58,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,416 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:58,694 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:58,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414409553] [2020-07-07 12:25:58,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:58,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:58,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909244982] [2020-07-07 12:25:58,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:58,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:58,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:58,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:58,698 INFO L87 Difference]: Start difference. First operand 393 states and 423 transitions. Second operand 10 states. [2020-07-07 12:25:59,195 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:00,813 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:01,058 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:01,308 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:01,544 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:01,753 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:01,971 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:02,182 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:02,544 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:04,393 INFO L93 Difference]: Finished difference Result 1148 states and 1376 transitions. [2020-07-07 12:26:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:26:04,394 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2020-07-07 12:26:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:04,400 INFO L225 Difference]: With dead ends: 1148 [2020-07-07 12:26:04,401 INFO L226 Difference]: Without dead ends: 865 [2020-07-07 12:26:04,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:26:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2020-07-07 12:26:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 639. [2020-07-07 12:26:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-07-07 12:26:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 694 transitions. [2020-07-07 12:26:04,593 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 694 transitions. Word has length 198 [2020-07-07 12:26:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:04,594 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 694 transitions. [2020-07-07 12:26:04,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 694 transitions. [2020-07-07 12:26:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-07 12:26:04,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:04,597 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, 1, 1] [2020-07-07 12:26:04,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:26:04,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash -704447827, now seen corresponding path program 1 times [2020-07-07 12:26:04,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:04,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482994028] [2020-07-07 12:26:04,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,876 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:05,075 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:05,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482994028] [2020-07-07 12:26:05,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:05,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:26:05,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900218311] [2020-07-07 12:26:05,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:26:05,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:05,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:26:05,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:26:05,080 INFO L87 Difference]: Start difference. First operand 639 states and 694 transitions. Second operand 11 states. [2020-07-07 12:26:05,585 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:07,127 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:07,349 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:07,581 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:07,857 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:08,109 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:08,390 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:08,627 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:08,886 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:10,221 INFO L93 Difference]: Finished difference Result 1000 states and 1228 transitions. [2020-07-07 12:26:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 12:26:10,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2020-07-07 12:26:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:10,230 INFO L225 Difference]: With dead ends: 1000 [2020-07-07 12:26:10,230 INFO L226 Difference]: Without dead ends: 997 [2020-07-07 12:26:10,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-07-07 12:26:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-07-07 12:26:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 639. [2020-07-07 12:26:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-07-07 12:26:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 693 transitions. [2020-07-07 12:26:10,415 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 693 transitions. Word has length 203 [2020-07-07 12:26:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:10,416 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 693 transitions. [2020-07-07 12:26:10,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:26:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 693 transitions. [2020-07-07 12:26:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:26:10,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:10,419 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, 1, 1, 1] [2020-07-07 12:26:10,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:26:10,420 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1818229592, now seen corresponding path program 1 times [2020-07-07 12:26:10,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:10,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204624713] [2020-07-07 12:26:10,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,660 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:10,855 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:10,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204624713] [2020-07-07 12:26:10,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:10,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:26:10,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867721714] [2020-07-07 12:26:10,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:26:10,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:26:10,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:26:10,857 INFO L87 Difference]: Start difference. First operand 639 states and 693 transitions. Second operand 11 states. [2020-07-07 12:26:12,066 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:12,301 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:12,556 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:26:12,784 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:13,021 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:13,232 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:15,214 INFO L93 Difference]: Finished difference Result 1536 states and 1843 transitions. [2020-07-07 12:26:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:26:15,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-07-07 12:26:15,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:15,221 INFO L225 Difference]: With dead ends: 1536 [2020-07-07 12:26:15,221 INFO L226 Difference]: Without dead ends: 1007 [2020-07-07 12:26:15,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-07-07 12:26:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-07-07 12:26:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 655. [2020-07-07 12:26:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-07-07 12:26:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 709 transitions. [2020-07-07 12:26:15,426 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 709 transitions. Word has length 204 [2020-07-07 12:26:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:15,426 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 709 transitions. [2020-07-07 12:26:15,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:26:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 709 transitions. [2020-07-07 12:26:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:26:15,430 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:15,431 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, 1, 1, 1] [2020-07-07 12:26:15,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:26:15,431 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:15,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1404598200, now seen corresponding path program 1 times [2020-07-07 12:26:15,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:15,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740668546] [2020-07-07 12:26:15,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,692 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:15,911 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:15,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740668546] [2020-07-07 12:26:15,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:15,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:26:15,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725423791] [2020-07-07 12:26:15,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:26:15,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:15,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:26:15,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:26:15,913 INFO L87 Difference]: Start difference. First operand 655 states and 709 transitions. Second operand 14 states. [2020-07-07 12:26:16,462 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:16,713 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:16,952 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:17,190 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:17,420 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:18,290 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:18,522 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:18,771 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:19,018 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:19,238 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:21,088 INFO L93 Difference]: Finished difference Result 1574 states and 1908 transitions. [2020-07-07 12:26:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:26:21,089 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-07-07 12:26:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:21,095 INFO L225 Difference]: With dead ends: 1574 [2020-07-07 12:26:21,095 INFO L226 Difference]: Without dead ends: 1029 [2020-07-07 12:26:21,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-07 12:26:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-07-07 12:26:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 667. [2020-07-07 12:26:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-07-07 12:26:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 721 transitions. [2020-07-07 12:26:21,382 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 721 transitions. Word has length 204 [2020-07-07 12:26:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:21,382 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 721 transitions. [2020-07-07 12:26:21,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:26:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 721 transitions. [2020-07-07 12:26:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:26:21,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:21,388 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, 1, 1, 1] [2020-07-07 12:26:21,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:26:21,388 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:21,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:21,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1474116309, now seen corresponding path program 1 times [2020-07-07 12:26:21,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:21,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562935441] [2020-07-07 12:26:21,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,731 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:21,971 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:21,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562935441] [2020-07-07 12:26:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:21,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 12:26:21,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423296051] [2020-07-07 12:26:21,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 12:26:21,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:21,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 12:26:21,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 12:26:21,973 INFO L87 Difference]: Start difference. First operand 667 states and 721 transitions. Second operand 8 states. [2020-07-07 12:26:22,470 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:23,021 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:26,885 INFO L93 Difference]: Finished difference Result 2263 states and 2829 transitions. [2020-07-07 12:26:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 12:26:26,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-07-07 12:26:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:26,897 INFO L225 Difference]: With dead ends: 2263 [2020-07-07 12:26:26,897 INFO L226 Difference]: Without dead ends: 1706 [2020-07-07 12:26:26,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-07-07 12:26:26,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-07-07 12:26:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1129. [2020-07-07 12:26:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-07-07 12:26:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1261 transitions. [2020-07-07 12:26:27,328 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1261 transitions. Word has length 204 [2020-07-07 12:26:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:27,329 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1261 transitions. [2020-07-07 12:26:27,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 12:26:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1261 transitions. [2020-07-07 12:26:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-07 12:26:27,331 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:27,332 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:27,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:26:27,332 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:27,332 INFO L82 PathProgramCache]: Analyzing trace with hash -534461845, now seen corresponding path program 1 times [2020-07-07 12:26:27,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:27,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879515659] [2020-07-07 12:26:27,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:27,638 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:27,639 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:26:27,639 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:26:27,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:26:27,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:26:27 BoogieIcfgContainer [2020-07-07 12:26:27,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:26:27,686 INFO L168 Benchmark]: Toolchain (without parser) took 44769.30 ms. Allocated memory was 145.2 MB in the beginning and 880.3 MB in the end (delta: 735.1 MB). Free memory was 102.2 MB in the beginning and 485.4 MB in the end (delta: -383.2 MB). Peak memory consumption was 351.9 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:27,696 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:26:27,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.86 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 169.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:27,697 INFO L168 Benchmark]: Boogie Preprocessor took 91.17 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 165.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:27,702 INFO L168 Benchmark]: RCFGBuilder took 1261.51 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 171.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:27,703 INFO L168 Benchmark]: TraceAbstraction took 42696.13 ms. Allocated memory was 235.4 MB in the beginning and 880.3 MB in the end (delta: 644.9 MB). Free memory was 171.4 MB in the beginning and 485.4 MB in the end (delta: -314.0 MB). Peak memory consumption was 330.8 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:27,713 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.86 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 169.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.17 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 165.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1261.51 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 171.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42696.13 ms. Allocated memory was 235.4 MB in the beginning and 880.3 MB in the end (delta: 644.9 MB). Free memory was 171.4 MB in the beginning and 485.4 MB in the end (delta: -314.0 MB). Peak memory consumption was 330.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 [L155] COND TRUE 1 [L157] COND TRUE splverifierCounter < 4 [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) [L167] CALL waterRise() [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 [L167] RET waterRise() [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) [L177] CALL changeMethaneLevel() [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 [L177] RET changeMethaneLevel() [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) [L187] CALL startSystem() [L456] systemActive = 1 [L187] RET startSystem() [L200] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(\read(pumpRunning)) [L336] CALL processEnvironment__wrappee__lowWaterSensor() [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L310] CALL processEnvironment__wrappee__highWaterSensor() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L969] int retValue_acc ; [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L346] pumpRunning = 1 [L275] RET activatePump() [L310] RET processEnvironment__wrappee__highWaterSensor() [L336] RET processEnvironment__wrappee__lowWaterSensor() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification1_spec__1() [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isMethaneLevelCritical() [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); [L502] RET, EXPR isMethaneLevelCritical() [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L506] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L506] RET, EXPR isPumpRunning() [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) [L510] CALL __automaton_fail() [L216] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 653 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 35.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2441 SDtfs, 6421 SDslu, 4496 SDs, 0 SdLazy, 9919 SolverSat, 2101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 274 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1129occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2142 StatesRemovedByMinimization, 9 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...