/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_spec5_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:19:19,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:19:19,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:19:19,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:19:19,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:19:19,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:19:19,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:19:19,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:19:19,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:19:19,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:19:19,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:19:19,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:19:19,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:19:19,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:19:19,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:19:19,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:19:19,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:19:19,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:19:19,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:19:19,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:19:19,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:19:19,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:19:19,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:19:19,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:19:19,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:19:19,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:19:19,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:19:19,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:19:19,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:19:19,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:19:19,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:19:19,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:19:19,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:19:19,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:19:19,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:19:19,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:19:19,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:19:19,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:19:19,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:19:19,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:19:19,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:19:19,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:19:19,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:19:19,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:19:19,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:19:19,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:19:19,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:19:19,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:19:19,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:19:19,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:19:19,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:19:19,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:19:19,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:19:19,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:19:19,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:19:19,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:19:19,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:19:19,532 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:19:19,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:19:19,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:19:19,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:19,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:19:19,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:19:19,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:19:19,533 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:19:19,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:19:20,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:19:20,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:19:20,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:19:20,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:19:20,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2020-10-23 20:19:20,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6f10c5a/0674b175147241d588f76b54c469d75a/FLAGb65bd1ddf [2020-10-23 20:19:20,823 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:19:20,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2020-10-23 20:19:20,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6f10c5a/0674b175147241d588f76b54c469d75a/FLAGb65bd1ddf [2020-10-23 20:19:21,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6f10c5a/0674b175147241d588f76b54c469d75a [2020-10-23 20:19:21,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:19:21,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:19:21,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:21,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:19:21,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:19:21,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b2851c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21, skipping insertion in model container [2020-10-23 20:19:21,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:19:21,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:19:21,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:21,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:19:21,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:21,663 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:19:21,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21 WrapperNode [2020-10-23 20:19:21,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:21,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:19:21,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:19:21,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:19:21,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... [2020-10-23 20:19:21,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:19:21,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:19:21,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:19:21,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:19:21,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:19:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:19:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:19:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:19:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:19:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:19:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:19:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:19:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:19:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:19:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:19:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:19:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:19:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:19:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:19:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:19:21,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:19:21,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:19:21,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:19:21,944 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:19:21,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:19:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:19:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:19:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:19:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:19:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:19:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:19:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:19:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:19:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:19:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:19:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:19:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:19:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:19:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:19:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:19:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:19:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:19:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:19:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:19:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:19:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:19:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:19:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:19:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:19:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:19:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:19:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:19:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:19:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:19:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:19:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:19:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:19:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:19:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:19:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:19:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:19:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:19:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:19:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:19:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:19:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:19:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:19:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:19:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:19:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:19:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:19:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:19:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:19:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:19:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:19:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:19:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:19:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:19:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:19:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:19:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:19:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:19:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:19:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:19:23,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:19:23,290 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:19:23,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:23 BoogieIcfgContainer [2020-10-23 20:19:23,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:19:23,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:19:23,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:19:23,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:19:23,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:21" (1/3) ... [2020-10-23 20:19:23,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c35ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:23, skipping insertion in model container [2020-10-23 20:19:23,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:21" (2/3) ... [2020-10-23 20:19:23,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c35ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:23, skipping insertion in model container [2020-10-23 20:19:23,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:23" (3/3) ... [2020-10-23 20:19:23,304 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product33.cil.c [2020-10-23 20:19:23,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:19:23,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:19:23,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:19:23,369 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:19:23,369 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:19:23,369 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:19:23,369 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:19:23,369 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:19:23,370 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:19:23,370 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:19:23,370 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:19:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states. [2020-10-23 20:19:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:19:23,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:23,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:23,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:23,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2086203939, now seen corresponding path program 1 times [2020-10-23 20:19:23,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:23,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801007399] [2020-10-23 20:19:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:23,510 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,192 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:19:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:19:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:24,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801007399] [2020-10-23 20:19:24,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:24,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:19:24,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992627348] [2020-10-23 20:19:24,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:19:24,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:19:24,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:24,425 INFO L87 Difference]: Start difference. First operand 300 states. Second operand 4 states. [2020-10-23 20:19:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:25,968 INFO L93 Difference]: Finished difference Result 447 states and 525 transitions. [2020-10-23 20:19:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:19:25,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:19:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:25,987 INFO L225 Difference]: With dead ends: 447 [2020-10-23 20:19:25,987 INFO L226 Difference]: Without dead ends: 288 [2020-10-23 20:19:25,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-23 20:19:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 246. [2020-10-23 20:19:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-23 20:19:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 266 transitions. [2020-10-23 20:19:26,166 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 266 transitions. Word has length 166 [2020-10-23 20:19:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:26,168 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 266 transitions. [2020-10-23 20:19:26,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:19:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 266 transitions. [2020-10-23 20:19:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:19:26,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:26,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:26,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:19:26,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1132009738, now seen corresponding path program 1 times [2020-10-23 20:19:26,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:26,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715253336] [2020-10-23 20:19:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:26,180 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,672 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:19:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:19:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:26,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715253336] [2020-10-23 20:19:26,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:26,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:19:26,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012968215] [2020-10-23 20:19:26,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:19:26,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:19:26,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:19:26,840 INFO L87 Difference]: Start difference. First operand 246 states and 266 transitions. Second operand 5 states. [2020-10-23 20:19:27,758 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:28,797 INFO L93 Difference]: Finished difference Result 373 states and 417 transitions. [2020-10-23 20:19:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:19:28,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:19:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:28,805 INFO L225 Difference]: With dead ends: 373 [2020-10-23 20:19:28,805 INFO L226 Difference]: Without dead ends: 277 [2020-10-23 20:19:28,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:19:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-23 20:19:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-10-23 20:19:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-23 20:19:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 253 transitions. [2020-10-23 20:19:28,947 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 253 transitions. Word has length 167 [2020-10-23 20:19:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:28,948 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 253 transitions. [2020-10-23 20:19:28,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:19:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 253 transitions. [2020-10-23 20:19:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:19:28,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:28,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:28,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:19:28,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:28,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:28,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1100497290, now seen corresponding path program 1 times [2020-10-23 20:19:28,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:28,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274315587] [2020-10-23 20:19:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:28,963 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,485 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:29,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:19:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:29,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274315587] [2020-10-23 20:19:29,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:29,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:19:29,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820777447] [2020-10-23 20:19:29,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:19:29,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:29,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:19:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:19:29,750 INFO L87 Difference]: Start difference. First operand 236 states and 253 transitions. Second operand 10 states. [2020-10-23 20:19:30,514 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:30,987 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:19:31,438 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:31,877 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:32,297 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:32,710 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:34,329 INFO L93 Difference]: Finished difference Result 393 states and 443 transitions. [2020-10-23 20:19:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:19:34,330 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:19:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:34,335 INFO L225 Difference]: With dead ends: 393 [2020-10-23 20:19:34,335 INFO L226 Difference]: Without dead ends: 277 [2020-10-23 20:19:34,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:19:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-23 20:19:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-10-23 20:19:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-23 20:19:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 252 transitions. [2020-10-23 20:19:34,447 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 252 transitions. Word has length 176 [2020-10-23 20:19:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:34,449 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 252 transitions. [2020-10-23 20:19:34,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:19:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 252 transitions. [2020-10-23 20:19:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-23 20:19:34,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:34,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:34,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:19:34,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:34,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1197874119, now seen corresponding path program 1 times [2020-10-23 20:19:34,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:34,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271835402] [2020-10-23 20:19:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:34,479 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:34,936 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:34,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:34,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:34,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:34,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:19:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 20:19:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 20:19:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:35,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271835402] [2020-10-23 20:19:35,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:35,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:19:35,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535620233] [2020-10-23 20:19:35,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:19:35,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:35,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:19:35,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:19:35,126 INFO L87 Difference]: Start difference. First operand 236 states and 252 transitions. Second operand 7 states. [2020-10-23 20:19:35,846 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:37,961 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:38,422 INFO L93 Difference]: Finished difference Result 526 states and 603 transitions. [2020-10-23 20:19:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:19:38,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-23 20:19:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:38,427 INFO L225 Difference]: With dead ends: 526 [2020-10-23 20:19:38,427 INFO L226 Difference]: Without dead ends: 410 [2020-10-23 20:19:38,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:19:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-23 20:19:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 340. [2020-10-23 20:19:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-23 20:19:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 369 transitions. [2020-10-23 20:19:38,598 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 369 transitions. Word has length 184 [2020-10-23 20:19:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:38,599 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 369 transitions. [2020-10-23 20:19:38,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:19:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 369 transitions. [2020-10-23 20:19:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-23 20:19:38,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:38,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:38,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:19:38,604 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:38,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1638487638, now seen corresponding path program 1 times [2020-10-23 20:19:38,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:38,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366004004] [2020-10-23 20:19:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:38,609 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,066 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:19:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:19:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:19:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 20:19:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:19:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:39,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366004004] [2020-10-23 20:19:39,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:39,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:19:39,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794400418] [2020-10-23 20:19:39,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:19:39,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:39,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:19:39,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:19:39,310 INFO L87 Difference]: Start difference. First operand 340 states and 369 transitions. Second operand 10 states. [2020-10-23 20:19:40,063 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:41,643 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:42,075 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:42,517 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:42,944 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:43,418 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:43,836 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:45,511 INFO L93 Difference]: Finished difference Result 841 states and 996 transitions. [2020-10-23 20:19:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 20:19:45,518 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 208 [2020-10-23 20:19:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:45,522 INFO L225 Difference]: With dead ends: 841 [2020-10-23 20:19:45,523 INFO L226 Difference]: Without dead ends: 621 [2020-10-23 20:19:45,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:19:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-23 20:19:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 520. [2020-10-23 20:19:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-23 20:19:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 576 transitions. [2020-10-23 20:19:45,714 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 576 transitions. Word has length 208 [2020-10-23 20:19:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:45,715 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 576 transitions. [2020-10-23 20:19:45,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:19:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 576 transitions. [2020-10-23 20:19:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-23 20:19:45,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:45,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:45,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:19:45,720 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:45,720 INFO L82 PathProgramCache]: Analyzing trace with hash 492635053, now seen corresponding path program 1 times [2020-10-23 20:19:45,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:45,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531070422] [2020-10-23 20:19:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:45,724 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,106 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:19:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:19:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:19:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-23 20:19:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:19:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:19:46,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531070422] [2020-10-23 20:19:46,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:46,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:19:46,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011055373] [2020-10-23 20:19:46,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:19:46,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:46,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:19:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:19:46,299 INFO L87 Difference]: Start difference. First operand 520 states and 576 transitions. Second operand 10 states. [2020-10-23 20:19:46,970 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:48,005 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:48,406 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:49,478 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:49,843 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:50,289 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:50,885 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:51,273 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:51,651 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:51,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:51,966 INFO L93 Difference]: Finished difference Result 1014 states and 1170 transitions. [2020-10-23 20:19:51,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:19:51,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 208 [2020-10-23 20:19:51,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:51,972 INFO L225 Difference]: With dead ends: 1014 [2020-10-23 20:19:51,972 INFO L226 Difference]: Without dead ends: 614 [2020-10-23 20:19:51,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:19:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-10-23 20:19:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 518. [2020-10-23 20:19:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-23 20:19:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 570 transitions. [2020-10-23 20:19:52,199 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 570 transitions. Word has length 208 [2020-10-23 20:19:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:52,200 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 570 transitions. [2020-10-23 20:19:52,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:19:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 570 transitions. [2020-10-23 20:19:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-23 20:19:52,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:52,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:52,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:19:52,204 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:52,205 INFO L82 PathProgramCache]: Analyzing trace with hash 304640437, now seen corresponding path program 1 times [2020-10-23 20:19:52,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:52,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59540837] [2020-10-23 20:19:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:52,209 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,586 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:52,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:19:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:19:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:19:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-23 20:19:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 20:19:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:19:52,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59540837] [2020-10-23 20:19:52,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:52,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:19:52,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48175953] [2020-10-23 20:19:52,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:19:52,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:52,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:19:52,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:19:52,803 INFO L87 Difference]: Start difference. First operand 518 states and 570 transitions. Second operand 10 states. [2020-10-23 20:19:54,396 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:54,793 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:55,197 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:19:55,598 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:56,005 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:19:56,361 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:57,345 INFO L93 Difference]: Finished difference Result 1018 states and 1170 transitions. [2020-10-23 20:19:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:19:57,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 209 [2020-10-23 20:19:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:57,353 INFO L225 Difference]: With dead ends: 1018 [2020-10-23 20:19:57,354 INFO L226 Difference]: Without dead ends: 620 [2020-10-23 20:19:57,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:19:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-23 20:19:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 534. [2020-10-23 20:19:57,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-10-23 20:19:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 586 transitions. [2020-10-23 20:19:57,629 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 586 transitions. Word has length 209 [2020-10-23 20:19:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:57,629 INFO L481 AbstractCegarLoop]: Abstraction has 534 states and 586 transitions. [2020-10-23 20:19:57,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:19:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 586 transitions. [2020-10-23 20:19:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-23 20:19:57,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:57,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:57,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:19:57,634 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:57,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:57,634 INFO L82 PathProgramCache]: Analyzing trace with hash -669229739, now seen corresponding path program 1 times [2020-10-23 20:19:57,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:57,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302913215] [2020-10-23 20:19:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:57,638 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,044 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:58,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:19:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:19:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:19:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-23 20:19:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 20:19:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:19:58,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302913215] [2020-10-23 20:19:58,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:58,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:19:58,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945721737] [2020-10-23 20:19:58,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:19:58,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:58,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:19:58,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:19:58,329 INFO L87 Difference]: Start difference. First operand 534 states and 586 transitions. Second operand 13 states. [2020-10-23 20:19:59,088 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:59,483 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:59,872 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:00,250 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:00,629 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:01,800 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:02,172 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:02,570 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:02,983 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:03,353 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:04,335 INFO L93 Difference]: Finished difference Result 933 states and 1066 transitions. [2020-10-23 20:20:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:20:04,336 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 209 [2020-10-23 20:20:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:04,342 INFO L225 Difference]: With dead ends: 933 [2020-10-23 20:20:04,342 INFO L226 Difference]: Without dead ends: 519 [2020-10-23 20:20:04,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:20:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-23 20:20:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 450. [2020-10-23 20:20:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-23 20:20:04,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 484 transitions. [2020-10-23 20:20:04,542 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 484 transitions. Word has length 209 [2020-10-23 20:20:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:04,543 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 484 transitions. [2020-10-23 20:20:04,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:20:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 484 transitions. [2020-10-23 20:20:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:20:04,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:04,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:04,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:20:04,546 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash 493192232, now seen corresponding path program 1 times [2020-10-23 20:20:04,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:04,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385761249] [2020-10-23 20:20:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:04,550 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,030 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:20:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:20:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:20:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:20:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:05,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385761249] [2020-10-23 20:20:05,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:05,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:05,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904557059] [2020-10-23 20:20:05,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:05,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:05,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:05,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:05,305 INFO L87 Difference]: Start difference. First operand 450 states and 484 transitions. Second operand 14 states. [2020-10-23 20:20:06,327 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:20:07,413 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:09,364 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:20:10,109 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:20:10,554 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:10,938 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:11,676 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:20:12,072 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:12,511 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:12,909 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:14,232 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:14,619 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:15,057 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:15,953 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:20:17,283 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:20:18,103 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:20:19,033 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:20:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:19,660 INFO L93 Difference]: Finished difference Result 1190 states and 1350 transitions. [2020-10-23 20:20:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-23 20:20:19,666 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 214 [2020-10-23 20:20:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:19,672 INFO L225 Difference]: With dead ends: 1190 [2020-10-23 20:20:19,672 INFO L226 Difference]: Without dead ends: 955 [2020-10-23 20:20:19,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=481, Invalid=1775, Unknown=0, NotChecked=0, Total=2256 [2020-10-23 20:20:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-23 20:20:20,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 857. [2020-10-23 20:20:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-10-23 20:20:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 927 transitions. [2020-10-23 20:20:20,090 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 927 transitions. Word has length 214 [2020-10-23 20:20:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:20,091 INFO L481 AbstractCegarLoop]: Abstraction has 857 states and 927 transitions. [2020-10-23 20:20:20,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:20:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 927 transitions. [2020-10-23 20:20:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-23 20:20:20,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:20,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:20,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:20:20,095 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:20,095 INFO L82 PathProgramCache]: Analyzing trace with hash -450419807, now seen corresponding path program 1 times [2020-10-23 20:20:20,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:20,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133479845] [2020-10-23 20:20:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:20,398 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:20,842 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:20:21,251 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:20:21,641 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:21,752 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-23 20:20:22,086 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:20:22,200 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:20:22,485 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:22,888 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:23,274 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:23,682 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:20:23,798 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:20:24,109 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:20:24,216 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 20:20:24,543 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-23 20:20:24,649 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:20:24,981 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:20:25,089 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 20:20:25,384 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:20:25,774 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:26,861 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:20:27,717 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:20:28,530 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:20:29,312 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:20:29,327 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:29,933 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:30,556 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:31,176 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:31,782 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:32,397 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:33,030 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:33,623 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:34,216 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-23 20:20:34,220 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:35,051 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:20:35,827 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:20:36,620 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:20:37,372 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:20:37,379 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:38,184 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:39,023 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:39,812 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:40,616 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:40,625 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:41,179 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 165 [2020-10-23 20:20:41,739 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 165 [2020-10-23 20:20:42,354 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 166 [2020-10-23 20:20:42,933 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 166 [2020-10-23 20:20:43,500 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 166 [2020-10-23 20:20:44,061 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 165 [2020-10-23 20:20:44,626 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 165 [2020-10-23 20:20:45,188 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 166 [2020-10-23 20:20:45,192 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:45,974 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:46,819 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:47,583 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:48,351 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:48,363 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:49,121 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:49,936 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:50,767 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:51,589 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:20:51,596 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:52,406 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:53,251 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:54,036 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:54,806 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:54,819 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:55,384 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:20:55,949 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:20:56,526 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:20:57,135 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:20:57,742 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:20:58,314 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:20:58,876 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:20:59,442 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:20:59,446 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:00,025 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:00,615 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:01,212 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:01,799 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:02,404 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:03,008 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:03,605 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:04,224 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:04,227 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:04,845 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:05,426 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:06,003 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:06,603 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:07,210 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:07,796 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:08,373 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:08,956 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:08,959 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:09,531 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:10,109 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:10,695 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:11,273 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:11,854 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:12,446 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:13,029 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:13,617 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:13,619 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:14,361 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:15,114 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:15,875 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:16,649 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:16,654 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:17,422 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:18,209 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:18,968 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:19,756 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:19,763 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:20,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:20,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:20,685 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:21:20,685 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:21:20,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:21:20,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:21:20 BoogieIcfgContainer [2020-10-23 20:21:20,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:21:20,733 INFO L168 Benchmark]: Toolchain (without parser) took 119640.60 ms. Allocated memory was 125.8 MB in the beginning and 533.7 MB in the end (delta: 407.9 MB). Free memory was 100.9 MB in the beginning and 369.6 MB in the end (delta: -268.7 MB). Peak memory consumption was 139.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:20,734 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 87.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:21:20,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.24 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 79.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:20,734 INFO L168 Benchmark]: Boogie Preprocessor took 157.22 ms. Allocated memory is still 125.8 MB. Free memory was 79.3 MB in the beginning and 75.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:20,735 INFO L168 Benchmark]: RCFGBuilder took 1470.41 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 75.5 MB in the beginning and 142.2 MB in the end (delta: -66.7 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:20,735 INFO L168 Benchmark]: TraceAbstraction took 117435.39 ms. Allocated memory was 168.8 MB in the beginning and 533.7 MB in the end (delta: 364.9 MB). Free memory was 141.7 MB in the beginning and 369.6 MB in the end (delta: -227.9 MB). Peak memory consumption was 137.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:20,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 87.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 565.24 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 79.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 157.22 ms. Allocated memory is still 125.8 MB. Free memory was 79.3 MB in the beginning and 75.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1470.41 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 75.5 MB in the beginning and 142.2 MB in the end (delta: -66.7 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 117435.39 ms. Allocated memory was 168.8 MB in the beginning and 533.7 MB in the end (delta: 364.9 MB). Free memory was 141.7 MB in the beginning and 369.6 MB in the end (delta: -227.9 MB). Peak memory consumption was 137.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L485] int pumpRunning = 0; [L486] int systemActive = 1; [L680] int cleanupTimeShifts = 4; [L788] int waterLevel = 1; [L789] int methaneLevelCritical = 0; [L882] int switchedOnBeforeTS ; [L755] int retValue_acc ; [L756] int tmp ; [L760] FCALL select_helpers() [L761] FCALL select_features() [L762] CALL, EXPR valid_product() [L671] int retValue_acc ; [L674] retValue_acc = 1 [L675] return (retValue_acc); [L762] RET, EXPR valid_product() [L762] tmp = valid_product() [L764] COND TRUE \read(tmp) [L766] FCALL setup() [L767] CALL runTest() [L748] CALL __utac_acc__Specification5_spec__1() [L887] switchedOnBeforeTS = 0 [L748] RET __utac_acc__Specification5_spec__1() [L749] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L806] COND TRUE waterLevel < 2 [L807] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L465] CALL timeShift() [L495] CALL __utac_acc__Specification5_spec__2() [L896] CALL, EXPR isPumpRunning() [L578] int retValue_acc ; [L581] retValue_acc = pumpRunning [L582] return (retValue_acc); [L896] RET, EXPR isPumpRunning() [L896] switchedOnBeforeTS = isPumpRunning() [L495] RET __utac_acc__Specification5_spec__2() [L497] COND FALSE !(\read(pumpRunning)) [L504] COND TRUE \read(systemActive) [L506] CALL processEnvironment() [L526] int tmp ; [L529] COND TRUE ! pumpRunning [L531] CALL, EXPR isHighWaterLevel() [L623] int retValue_acc ; [L624] int tmp ; [L625] int tmp___0 ; [L629] CALL, EXPR isHighWaterSensorDry() [L868] int retValue_acc ; [L871] COND FALSE !(waterLevel < 2) [L875] retValue_acc = 0 [L876] return (retValue_acc); [L629] RET, EXPR isHighWaterSensorDry() [L629] tmp = isHighWaterSensorDry() [L631] COND FALSE !(\read(tmp)) [L634] tmp___0 = 1 [L636] retValue_acc = tmp___0 [L637] return (retValue_acc); [L531] RET, EXPR isHighWaterLevel() [L531] tmp = isHighWaterLevel() [L533] COND TRUE \read(tmp) [L535] CALL activatePump() [L554] pumpRunning = 1 [L535] RET activatePump() [L506] RET processEnvironment() [L512] CALL __utac_acc__Specification5_spec__3() [L902] int tmp ; [L903] int tmp___0 ; [L907] CALL, EXPR getWaterLevel() [L859] int retValue_acc ; [L862] retValue_acc = waterLevel [L863] return (retValue_acc); [L907] RET, EXPR getWaterLevel() [L907] tmp = getWaterLevel() [L909] COND FALSE !(tmp != 2) [L512] RET __utac_acc__Specification5_spec__3() [L465] RET timeShift() [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND FALSE !(\read(tmp)) [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L465] CALL timeShift() [L495] CALL __utac_acc__Specification5_spec__2() [L896] CALL, EXPR isPumpRunning() [L578] int retValue_acc ; [L581] retValue_acc = pumpRunning [L582] return (retValue_acc); [L896] RET, EXPR isPumpRunning() [L896] switchedOnBeforeTS = isPumpRunning() [L495] RET __utac_acc__Specification5_spec__2() [L497] COND TRUE \read(pumpRunning) [L499] CALL lowerWaterLevel() [L794] COND TRUE waterLevel > 0 [L795] waterLevel = waterLevel - 1 [L499] RET lowerWaterLevel() [L504] COND TRUE \read(systemActive) [L506] CALL processEnvironment() [L526] int tmp ; [L529] COND FALSE !(! pumpRunning) [L544] FCALL processEnvironment__wrappee__base() [L506] RET processEnvironment() [L512] CALL __utac_acc__Specification5_spec__3() [L902] int tmp ; [L903] int tmp___0 ; [L907] CALL, EXPR getWaterLevel() [L859] int retValue_acc ; [L862] retValue_acc = waterLevel [L863] return (retValue_acc); [L907] RET, EXPR getWaterLevel() [L907] tmp = getWaterLevel() [L909] COND TRUE tmp != 2 [L911] CALL, EXPR isPumpRunning() [L578] int retValue_acc ; [L581] retValue_acc = pumpRunning [L582] return (retValue_acc); [L911] RET, EXPR isPumpRunning() [L911] tmp___0 = isPumpRunning() [L913] COND TRUE \read(tmp___0) [L914] COND TRUE ! switchedOnBeforeTS [L916] CALL __automaton_fail() [L782] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product33.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 632 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 117.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 48.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2129 SDtfs, 4954 SDslu, 5029 SDs, 0 SdLazy, 8340 SolverSat, 1321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=857occurred 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: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 644 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...