/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_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:02:57,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:02:57,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:02:57,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:02:57,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:02:57,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:02:57,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:02:57,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:02:57,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:02:57,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:02:57,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:02:57,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:02:57,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:02:57,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:02:57,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:02:57,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:02:57,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:02:57,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:02:57,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:02:57,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:02:57,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:02:57,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:02:57,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:02:57,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:02:57,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:02:57,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:02:57,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:02:57,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:02:57,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:02:57,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:02:57,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:02:57,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:02:57,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:02:57,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:02:57,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:02:57,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:02:57,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:02:57,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:02:57,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:02:57,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:02:57,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:02:57,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:02:57,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:02:57,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:02:57,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:02:57,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:02:57,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:02:57,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:02:57,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:02:57,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:02:57,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:02:57,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:02:57,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:02:57,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:02:57,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:02:57,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:02:57,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:02:57,524 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:02:57,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:02:57,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:02:57,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:02:57,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:02:57,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:02:57,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:02:57,525 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:02:57,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:02:57,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:02:57,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:02:57,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:02:57,981 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:02:57,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-09-04 15:02:58,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/882616865/41d8406ce3174d6bb3ccbe39b6bf8e2c/FLAGf808bc1fd [2020-09-04 15:02:58,689 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:02:58,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-09-04 15:02:58,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/882616865/41d8406ce3174d6bb3ccbe39b6bf8e2c/FLAGf808bc1fd [2020-09-04 15:02:58,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/882616865/41d8406ce3174d6bb3ccbe39b6bf8e2c [2020-09-04 15:02:59,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:02:59,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:02:59,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:59,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:02:59,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:02:59,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:58" (1/1) ... [2020-09-04 15:02:59,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37515be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59, skipping insertion in model container [2020-09-04 15:02:59,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:58" (1/1) ... [2020-09-04 15:02:59,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:02:59,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:02:59,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:59,595 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:02:59,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:59,770 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:02:59,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59 WrapperNode [2020-09-04 15:02:59,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:59,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:02:59,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:02:59,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:02:59,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... [2020-09-04 15:02:59,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... [2020-09-04 15:02:59,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... [2020-09-04 15:02:59,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... [2020-09-04 15:02:59,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... [2020-09-04 15:02:59,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... [2020-09-04 15:02:59,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... [2020-09-04 15:02:59,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:02:59,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:02:59,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:02:59,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:02:59,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:02:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:02:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:02:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:02:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:02:59,948 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:02:59,948 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:02:59,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:02:59,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:59,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:02:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:02:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:02:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:02:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:02:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:02:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:02:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:02:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:02:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:02:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:02:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:02:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:02:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:02:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:02:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:02:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:02:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:02:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:02:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:02:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:02:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:02:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:02:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:02:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:02:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:02:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:02:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:02:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:02:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:02:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:02:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:02:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:02:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:02:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:02:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:02:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:02:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:02:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:02:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:02:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:02:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:02:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:02:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:02:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:02:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:02:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:02:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:02:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:02:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:02:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:02:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:02:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:02:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:02:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:02:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:02:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:02:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:02:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:02:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:02:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:02:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:02:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:02:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:02:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:02:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:02:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:02:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:02:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:02:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:02:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:02:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:02:59,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:02:59,963 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:02:59,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:02:59,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:02:59,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:03:01,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:03:01,130 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:03:01,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:01 BoogieIcfgContainer [2020-09-04 15:03:01,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:03:01,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:03:01,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:03:01,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:03:01,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:02:58" (1/3) ... [2020-09-04 15:03:01,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe44e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:01, skipping insertion in model container [2020-09-04 15:03:01,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:59" (2/3) ... [2020-09-04 15:03:01,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe44e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:01, skipping insertion in model container [2020-09-04 15:03:01,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:01" (3/3) ... [2020-09-04 15:03:01,150 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-09-04 15:03:01,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:03:01,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:03:01,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:03:01,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:03:01,235 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:03:01,235 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:03:01,235 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:03:01,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:03:01,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:03:01,236 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:03:01,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:03:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2020-09-04 15:03:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:03:01,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:01,310 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] [2020-09-04 15:03:01,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:01,320 INFO L82 PathProgramCache]: Analyzing trace with hash -231713174, now seen corresponding path program 1 times [2020-09-04 15:03:01,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:01,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737323975] [2020-09-04 15:03:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:01,427 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,125 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:02,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:03:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:02,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737323975] [2020-09-04 15:03:02,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:02,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:03:02,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261979677] [2020-09-04 15:03:02,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:03:02,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:02,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:03:02,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:02,343 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 3 states. [2020-09-04 15:03:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:03,776 INFO L93 Difference]: Finished difference Result 489 states and 580 transitions. [2020-09-04 15:03:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:03:03,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:03:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:03,799 INFO L225 Difference]: With dead ends: 489 [2020-09-04 15:03:03,800 INFO L226 Difference]: Without dead ends: 302 [2020-09-04 15:03:03,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:03,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-04 15:03:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2020-09-04 15:03:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-04 15:03:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 283 transitions. [2020-09-04 15:03:03,974 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 283 transitions. Word has length 142 [2020-09-04 15:03:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:03,975 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 283 transitions. [2020-09-04 15:03:03,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:03:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 283 transitions. [2020-09-04 15:03:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:03:03,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:03,985 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] [2020-09-04 15:03:03,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:03:03,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:03,986 INFO L82 PathProgramCache]: Analyzing trace with hash 259002356, now seen corresponding path program 1 times [2020-09-04 15:03:03,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:03,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494369316] [2020-09-04 15:03:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:03,990 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,494 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:03:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:04,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494369316] [2020-09-04 15:03:04,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:04,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:03:04,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332572633] [2020-09-04 15:03:04,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:03:04,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:04,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:03:04,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:03:04,635 INFO L87 Difference]: Start difference. First operand 261 states and 283 transitions. Second operand 4 states. [2020-09-04 15:03:05,327 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:06,377 INFO L93 Difference]: Finished difference Result 406 states and 455 transitions. [2020-09-04 15:03:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:03:06,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:03:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:06,383 INFO L225 Difference]: With dead ends: 406 [2020-09-04 15:03:06,384 INFO L226 Difference]: Without dead ends: 285 [2020-09-04 15:03:06,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:03:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-04 15:03:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-09-04 15:03:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-04 15:03:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 270 transitions. [2020-09-04 15:03:06,473 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 270 transitions. Word has length 143 [2020-09-04 15:03:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:06,474 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 270 transitions. [2020-09-04 15:03:06,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:03:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 270 transitions. [2020-09-04 15:03:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 15:03:06,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:06,477 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] [2020-09-04 15:03:06,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:03:06,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:06,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1790714059, now seen corresponding path program 1 times [2020-09-04 15:03:06,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:06,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213460416] [2020-09-04 15:03:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:06,482 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,901 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:03:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:03:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:07,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213460416] [2020-09-04 15:03:07,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:07,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:03:07,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199139413] [2020-09-04 15:03:07,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:03:07,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:07,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:03:07,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:03:07,093 INFO L87 Difference]: Start difference. First operand 251 states and 270 transitions. Second operand 9 states. [2020-09-04 15:03:07,604 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:07,989 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:08,297 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:08,621 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:08,941 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:09,225 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:10,862 INFO L93 Difference]: Finished difference Result 426 states and 480 transitions. [2020-09-04 15:03:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:03:10,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 15:03:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:10,867 INFO L225 Difference]: With dead ends: 426 [2020-09-04 15:03:10,868 INFO L226 Difference]: Without dead ends: 285 [2020-09-04 15:03:10,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:03:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-04 15:03:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-09-04 15:03:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-04 15:03:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 269 transitions. [2020-09-04 15:03:10,942 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 269 transitions. Word has length 152 [2020-09-04 15:03:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:10,943 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 269 transitions. [2020-09-04 15:03:10,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:03:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 269 transitions. [2020-09-04 15:03:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-04 15:03:10,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:10,946 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] [2020-09-04 15:03:10,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:03:10,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash -196376212, now seen corresponding path program 1 times [2020-09-04 15:03:10,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:10,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869571320] [2020-09-04 15:03:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:10,950 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,343 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:03:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-04 15:03:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 15:03:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:11,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869571320] [2020-09-04 15:03:11,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:11,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:03:11,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586691775] [2020-09-04 15:03:11,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:03:11,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:11,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:03:11,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:03:11,578 INFO L87 Difference]: Start difference. First operand 251 states and 269 transitions. Second operand 6 states. [2020-09-04 15:03:12,072 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:13,602 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:14,364 INFO L93 Difference]: Finished difference Result 557 states and 635 transitions. [2020-09-04 15:03:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:03:14,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-04 15:03:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:14,369 INFO L225 Difference]: With dead ends: 557 [2020-09-04 15:03:14,369 INFO L226 Difference]: Without dead ends: 416 [2020-09-04 15:03:14,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-09-04 15:03:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 357. [2020-09-04 15:03:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-09-04 15:03:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 384 transitions. [2020-09-04 15:03:14,469 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 384 transitions. Word has length 165 [2020-09-04 15:03:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:14,470 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 384 transitions. [2020-09-04 15:03:14,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:03:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 384 transitions. [2020-09-04 15:03:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-04 15:03:14,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:14,473 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] [2020-09-04 15:03:14,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:03:14,474 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:14,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:14,474 INFO L82 PathProgramCache]: Analyzing trace with hash 875812700, now seen corresponding path program 1 times [2020-09-04 15:03:14,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:14,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862139289] [2020-09-04 15:03:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:14,477 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,863 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:03:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-04 15:03:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:15,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:03:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:15,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862139289] [2020-09-04 15:03:15,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:15,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:03:15,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30204150] [2020-09-04 15:03:15,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:03:15,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:15,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:03:15,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:03:15,118 INFO L87 Difference]: Start difference. First operand 357 states and 384 transitions. Second operand 9 states. [2020-09-04 15:03:15,657 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:17,311 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:17,636 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:17,959 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:18,285 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:18,572 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:18,859 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:19,148 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:19,585 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:20,877 INFO L93 Difference]: Finished difference Result 905 states and 1041 transitions. [2020-09-04 15:03:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:03:20,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 189 [2020-09-04 15:03:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:20,888 INFO L225 Difference]: With dead ends: 905 [2020-09-04 15:03:20,888 INFO L226 Difference]: Without dead ends: 658 [2020-09-04 15:03:20,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:03:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-04 15:03:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 567. [2020-09-04 15:03:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-09-04 15:03:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 616 transitions. [2020-09-04 15:03:21,118 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 616 transitions. Word has length 189 [2020-09-04 15:03:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:21,119 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 616 transitions. [2020-09-04 15:03:21,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:03:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 616 transitions. [2020-09-04 15:03:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 15:03:21,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:21,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:21,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:03:21,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:21,123 INFO L82 PathProgramCache]: Analyzing trace with hash -507166185, now seen corresponding path program 1 times [2020-09-04 15:03:21,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:21,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991443385] [2020-09-04 15:03:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:21,126 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,500 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:21,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:03:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:03:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:03:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:21,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991443385] [2020-09-04 15:03:21,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:21,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:21,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090757008] [2020-09-04 15:03:21,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:21,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:21,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:21,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:21,706 INFO L87 Difference]: Start difference. First operand 567 states and 616 transitions. Second operand 10 states. [2020-09-04 15:03:22,226 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:23,757 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:24,037 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:24,344 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:24,635 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:24,956 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:25,296 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:25,602 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:25,919 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:27,075 INFO L93 Difference]: Finished difference Result 724 states and 838 transitions. [2020-09-04 15:03:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:03:27,076 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-09-04 15:03:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:27,081 INFO L225 Difference]: With dead ends: 724 [2020-09-04 15:03:27,081 INFO L226 Difference]: Without dead ends: 721 [2020-09-04 15:03:27,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:03:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-09-04 15:03:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 567. [2020-09-04 15:03:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-09-04 15:03:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 615 transitions. [2020-09-04 15:03:27,283 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 615 transitions. Word has length 194 [2020-09-04 15:03:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:27,284 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 615 transitions. [2020-09-04 15:03:27,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 615 transitions. [2020-09-04 15:03:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 15:03:27,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:27,286 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] [2020-09-04 15:03:27,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:03:27,287 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1999533266, now seen corresponding path program 1 times [2020-09-04 15:03:27,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:27,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389781474] [2020-09-04 15:03:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:27,290 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,616 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:27,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:03:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-04 15:03:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 15:03:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:27,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389781474] [2020-09-04 15:03:27,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:27,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:27,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382261289] [2020-09-04 15:03:27,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:27,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:27,830 INFO L87 Difference]: Start difference. First operand 567 states and 615 transitions. Second operand 10 states. [2020-09-04 15:03:29,032 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:29,335 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:29,643 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:03:29,944 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:30,264 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:30,549 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:32,039 INFO L93 Difference]: Finished difference Result 1188 states and 1364 transitions. [2020-09-04 15:03:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:03:32,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-09-04 15:03:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:32,046 INFO L225 Difference]: With dead ends: 1188 [2020-09-04 15:03:32,046 INFO L226 Difference]: Without dead ends: 731 [2020-09-04 15:03:32,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:03:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-09-04 15:03:32,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 583. [2020-09-04 15:03:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-09-04 15:03:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 631 transitions. [2020-09-04 15:03:32,292 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 631 transitions. Word has length 195 [2020-09-04 15:03:32,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:32,293 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 631 transitions. [2020-09-04 15:03:32,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 631 transitions. [2020-09-04 15:03:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 15:03:32,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:32,296 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] [2020-09-04 15:03:32,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:03:32,297 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:32,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:32,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1025663090, now seen corresponding path program 1 times [2020-09-04 15:03:32,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:32,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631756100] [2020-09-04 15:03:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:32,301 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,671 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:03:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-04 15:03:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 15:03:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:32,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631756100] [2020-09-04 15:03:32,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:32,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 15:03:32,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511235176] [2020-09-04 15:03:32,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 15:03:32,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:32,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 15:03:32,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-04 15:03:32,890 INFO L87 Difference]: Start difference. First operand 583 states and 631 transitions. Second operand 13 states. [2020-09-04 15:03:33,530 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:33,835 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:34,150 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:34,464 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:34,770 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:35,713 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:36,042 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:36,377 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:36,717 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:37,022 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:38,621 INFO L93 Difference]: Finished difference Result 1226 states and 1418 transitions. [2020-09-04 15:03:38,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:03:38,623 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-09-04 15:03:38,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:38,628 INFO L225 Difference]: With dead ends: 1226 [2020-09-04 15:03:38,628 INFO L226 Difference]: Without dead ends: 753 [2020-09-04 15:03:38,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:03:38,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-09-04 15:03:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 595. [2020-09-04 15:03:38,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-09-04 15:03:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 643 transitions. [2020-09-04 15:03:38,782 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 643 transitions. Word has length 195 [2020-09-04 15:03:38,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:38,783 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 643 transitions. [2020-09-04 15:03:38,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 15:03:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 643 transitions. [2020-09-04 15:03:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 15:03:38,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:38,786 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] [2020-09-04 15:03:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:03:38,786 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:38,787 INFO L82 PathProgramCache]: Analyzing trace with hash -614630891, now seen corresponding path program 1 times [2020-09-04 15:03:38,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:38,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142849406] [2020-09-04 15:03:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:38,789 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,157 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:39,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:03:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-04 15:03:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 15:03:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:39,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142849406] [2020-09-04 15:03:39,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:39,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:03:39,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668482766] [2020-09-04 15:03:39,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:03:39,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:03:39,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:03:39,361 INFO L87 Difference]: Start difference. First operand 595 states and 643 transitions. Second operand 7 states. [2020-09-04 15:03:39,938 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:40,618 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:43,349 INFO L93 Difference]: Finished difference Result 1671 states and 1982 transitions. [2020-09-04 15:03:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:03:43,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-04 15:03:43,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:43,360 INFO L225 Difference]: With dead ends: 1671 [2020-09-04 15:03:43,360 INFO L226 Difference]: Without dead ends: 1186 [2020-09-04 15:03:43,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:03:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-09-04 15:03:43,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1013. [2020-09-04 15:03:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-09-04 15:03:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1135 transitions. [2020-09-04 15:03:43,857 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1135 transitions. Word has length 195 [2020-09-04 15:03:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:43,858 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1135 transitions. [2020-09-04 15:03:43,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:03:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1135 transitions. [2020-09-04 15:03:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 15:03:43,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:43,868 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] [2020-09-04 15:03:43,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:03:43,868 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:43,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1775813522, now seen corresponding path program 1 times [2020-09-04 15:03:43,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:43,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729928076] [2020-09-04 15:03:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:43,878 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:43,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:44,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:44,365 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:03:44,366 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:03:44,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:03:44,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:03:44 BoogieIcfgContainer [2020-09-04 15:03:44,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:03:44,429 INFO L168 Benchmark]: Toolchain (without parser) took 45424.09 ms. Allocated memory was 140.0 MB in the beginning and 826.3 MB in the end (delta: 686.3 MB). Free memory was 102.1 MB in the beginning and 529.8 MB in the end (delta: -427.8 MB). Peak memory consumption was 258.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:44,443 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:03:44,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.11 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 170.1 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:44,445 INFO L168 Benchmark]: Boogie Preprocessor took 92.69 ms. Allocated memory is still 203.9 MB. Free memory was 170.1 MB in the beginning and 166.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:44,447 INFO L168 Benchmark]: RCFGBuilder took 1274.94 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 166.2 MB in the beginning and 172.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:44,448 INFO L168 Benchmark]: TraceAbstraction took 43285.29 ms. Allocated memory was 237.0 MB in the beginning and 826.3 MB in the end (delta: 589.3 MB). Free memory was 172.4 MB in the beginning and 529.8 MB in the end (delta: -357.5 MB). Peak memory consumption was 231.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:44,458 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.11 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 170.1 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.69 ms. Allocated memory is still 203.9 MB. Free memory was 170.1 MB in the beginning and 166.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1274.94 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 166.2 MB in the beginning and 172.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43285.29 ms. Allocated memory was 237.0 MB in the beginning and 826.3 MB in the end (delta: 589.3 MB). Free memory was 172.4 MB in the beginning and 529.8 MB in the end (delta: -357.5 MB). Peak memory consumption was 231.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 637 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2218 SDtfs, 3891 SDslu, 3822 SDs, 0 SdLazy, 7850 SolverSat, 1111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1013occurred 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, 892 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...