/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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:19:59,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:19:59,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:19:59,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:19:59,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:19:59,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:19:59,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:19:59,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:19:59,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:19:59,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:19:59,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:19:59,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:19:59,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:19:59,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:19:59,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:19:59,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:19:59,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:19:59,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:19:59,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:19:59,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:19:59,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:19:59,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:19:59,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:19:59,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:19:59,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:19:59,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:19:59,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:19:59,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:19:59,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:19:59,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:19:59,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:19:59,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:19:59,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:19:59,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:19:59,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:19:59,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:19:59,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:19:59,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:19:59,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:19:59,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:19:59,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:19:59,555 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 20:19:59,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:19:59,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:19:59,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:19:59,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:19:59,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:19:59,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:19:59,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:19:59,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:19:59,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:19:59,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:19:59,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:19:59,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:19:59,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:19:59,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:19:59,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:19:59,583 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:19:59,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:19:59,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:19:59,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:59,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:19:59,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:19:59,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:19:59,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:20:00,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:20:00,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:20:00,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:20:00,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:20:00,080 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:20:00,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-10-23 20:20:00,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80970debb/e2dd17c601b044d2a129c596beff8d30/FLAG08d6097d0 [2020-10-23 20:20:01,210 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:20:01,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-10-23 20:20:01,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80970debb/e2dd17c601b044d2a129c596beff8d30/FLAG08d6097d0 [2020-10-23 20:20:01,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80970debb/e2dd17c601b044d2a129c596beff8d30 [2020-10-23 20:20:01,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:20:01,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:20:01,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:01,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:20:01,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:20:01,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c92a60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01, skipping insertion in model container [2020-10-23 20:20:01,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:20:01,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:20:01,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:02,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:20:02,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:02,165 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:20:02,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02 WrapperNode [2020-10-23 20:20:02,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:02,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:20:02,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:20:02,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:20:02,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (1/1) ... [2020-10-23 20:20:02,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (1/1) ... [2020-10-23 20:20:02,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (1/1) ... [2020-10-23 20:20:02,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (1/1) ... [2020-10-23 20:20:02,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (1/1) ... [2020-10-23 20:20:02,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (1/1) ... [2020-10-23 20:20:02,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (1/1) ... [2020-10-23 20:20:02,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:20:02,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:20:02,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:20:02,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:20:02,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (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 20:20:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:20:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:20:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:20:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:20:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:20:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:20:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:20:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:20:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:20:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:20:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:20:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:20:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:20:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:20:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:20:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:20:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:20:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:20:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:20:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:20:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:20:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:20:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:20:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:20:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:20:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:20:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:20:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:20:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:20:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:20:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:20:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:20:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:20:02,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:20:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:20:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:20:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:20:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:20:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:20:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:20:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:20:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:20:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:20:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:20:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:20:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:20:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:20:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:02,444 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:20:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:20:02,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:20:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:20:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:20:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:20:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:20:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:20:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:20:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:20:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:20:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:20:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:20:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:20:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:20:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:20:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:20:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:20:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:20:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:20:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:20:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:20:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:20:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:20:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:20:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:20:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:20:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:20:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:20:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:20:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:20:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:20:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:20:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:20:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:20:03,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:20:03,875 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:20:03,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:03 BoogieIcfgContainer [2020-10-23 20:20:03,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:20:03,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:20:03,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:20:03,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:20:03,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:20:01" (1/3) ... [2020-10-23 20:20:03,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538c9fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:03, skipping insertion in model container [2020-10-23 20:20:03,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:02" (2/3) ... [2020-10-23 20:20:03,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538c9fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:03, skipping insertion in model container [2020-10-23 20:20:03,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:03" (3/3) ... [2020-10-23 20:20:03,895 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-10-23 20:20:03,914 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:20:03,924 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:20:03,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:20:03,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:20:03,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:20:03,987 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:20:03,988 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:20:03,988 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:20:03,988 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:20:03,990 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:20:03,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:20:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-23 20:20:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:20:04,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:04,086 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 20:20:04,086 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 20:20:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:04,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1496834412, now seen corresponding path program 1 times [2020-10-23 20:20:04,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:04,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215455816] [2020-10-23 20:20:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:04,213 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,041 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:05,197 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 109 [2020-10-23 20:20:05,217 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 125 [2020-10-23 20:20:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:20:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:20:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:05,277 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 20:20:05,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215455816] [2020-10-23 20:20:05,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:05,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:20:05,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97206897] [2020-10-23 20:20:05,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:20:05,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:05,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:20:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:05,307 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 4 states. [2020-10-23 20:20:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:07,131 INFO L93 Difference]: Finished difference Result 514 states and 598 transitions. [2020-10-23 20:20:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:20:07,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:20:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:07,169 INFO L225 Difference]: With dead ends: 514 [2020-10-23 20:20:07,169 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 20:20:07,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 20:20:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 277. [2020-10-23 20:20:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-23 20:20:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 299 transitions. [2020-10-23 20:20:07,419 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 299 transitions. Word has length 166 [2020-10-23 20:20:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:07,421 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 299 transitions. [2020-10-23 20:20:07,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:20:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 299 transitions. [2020-10-23 20:20:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:20:07,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:07,427 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 20:20:07,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:20:07,428 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 20:20:07,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash 770888732, now seen corresponding path program 1 times [2020-10-23 20:20:07,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:07,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698101652] [2020-10-23 20:20:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:07,436 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:07,946 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:20:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:08,124 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 20:20:08,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698101652] [2020-10-23 20:20:08,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:08,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:20:08,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213137778] [2020-10-23 20:20:08,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:20:08,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:08,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:20:08,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:20:08,133 INFO L87 Difference]: Start difference. First operand 277 states and 299 transitions. Second operand 5 states. [2020-10-23 20:20:09,059 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:10,494 INFO L93 Difference]: Finished difference Result 431 states and 480 transitions. [2020-10-23 20:20:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:20:10,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:20:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:10,510 INFO L225 Difference]: With dead ends: 431 [2020-10-23 20:20:10,510 INFO L226 Difference]: Without dead ends: 313 [2020-10-23 20:20:10,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:20:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-23 20:20:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 267. [2020-10-23 20:20:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-23 20:20:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 286 transitions. [2020-10-23 20:20:10,668 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 286 transitions. Word has length 167 [2020-10-23 20:20:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:10,669 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 286 transitions. [2020-10-23 20:20:10,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:20:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 286 transitions. [2020-10-23 20:20:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:20:10,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:10,676 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 20:20:10,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:20:10,677 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 20:20:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:10,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1145135219, now seen corresponding path program 1 times [2020-10-23 20:20:10,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:10,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727125588] [2020-10-23 20:20:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:10,683 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,147 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:20:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:20:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:11,373 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 20:20:11,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727125588] [2020-10-23 20:20:11,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:11,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:11,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573140136] [2020-10-23 20:20:11,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:11,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:11,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:11,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:11,376 INFO L87 Difference]: Start difference. First operand 267 states and 286 transitions. Second operand 10 states. [2020-10-23 20:20:12,184 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:12,624 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:12,996 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:13,335 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:13,672 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:14,034 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:15,590 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:18,176 INFO L93 Difference]: Finished difference Result 703 states and 797 transitions. [2020-10-23 20:20:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:18,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:20:18,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:18,196 INFO L225 Difference]: With dead ends: 703 [2020-10-23 20:20:18,197 INFO L226 Difference]: Without dead ends: 556 [2020-10-23 20:20:18,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:20:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-10-23 20:20:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 473. [2020-10-23 20:20:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-23 20:20:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 523 transitions. [2020-10-23 20:20:18,582 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 523 transitions. Word has length 176 [2020-10-23 20:20:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:18,585 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 523 transitions. [2020-10-23 20:20:18,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 523 transitions. [2020-10-23 20:20:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-23 20:20:18,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:18,591 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 20:20:18,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:20:18,592 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 20:20:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:18,593 INFO L82 PathProgramCache]: Analyzing trace with hash -80901796, now seen corresponding path program 1 times [2020-10-23 20:20:18,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:18,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596144163] [2020-10-23 20:20:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:18,606 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,043 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 20:20:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 20:20:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,279 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 20:20:19,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596144163] [2020-10-23 20:20:19,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:19,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:20:19,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618891948] [2020-10-23 20:20:19,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:20:19,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:19,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:20:19,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:20:19,283 INFO L87 Difference]: Start difference. First operand 473 states and 523 transitions. Second operand 7 states. [2020-10-23 20:20:20,027 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:22,405 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:23,156 INFO L93 Difference]: Finished difference Result 1162 states and 1365 transitions. [2020-10-23 20:20:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:23,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-23 20:20:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:23,162 INFO L225 Difference]: With dead ends: 1162 [2020-10-23 20:20:23,163 INFO L226 Difference]: Without dead ends: 809 [2020-10-23 20:20:23,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:20:23,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-23 20:20:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 685. [2020-10-23 20:20:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-10-23 20:20:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 761 transitions. [2020-10-23 20:20:23,574 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 761 transitions. Word has length 184 [2020-10-23 20:20:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:23,575 INFO L481 AbstractCegarLoop]: Abstraction has 685 states and 761 transitions. [2020-10-23 20:20:23,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:20:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 761 transitions. [2020-10-23 20:20:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:20:23,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:23,579 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] [2020-10-23 20:20:23,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:20:23,580 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 20:20:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:23,580 INFO L82 PathProgramCache]: Analyzing trace with hash 917035390, now seen corresponding path program 1 times [2020-10-23 20:20:23,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:23,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211572] [2020-10-23 20:20:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:23,586 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,966 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:23,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:20:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:20:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:20:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:20:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:24,156 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 20:20:24,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211572] [2020-10-23 20:20:24,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:24,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:24,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572040374] [2020-10-23 20:20:24,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:24,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:24,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:24,159 INFO L87 Difference]: Start difference. First operand 685 states and 761 transitions. Second operand 10 states. [2020-10-23 20:20:24,833 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:25,859 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:26,199 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:27,653 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:28,002 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:28,335 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:28,771 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:29,094 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:29,481 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:30,194 INFO L93 Difference]: Finished difference Result 1335 states and 1528 transitions. [2020-10-23 20:20:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:20:30,194 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:20:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:30,202 INFO L225 Difference]: With dead ends: 1335 [2020-10-23 20:20:30,202 INFO L226 Difference]: Without dead ends: 770 [2020-10-23 20:20:30,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:20:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-10-23 20:20:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 682. [2020-10-23 20:20:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-10-23 20:20:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 752 transitions. [2020-10-23 20:20:30,591 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 752 transitions. Word has length 185 [2020-10-23 20:20:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:30,592 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 752 transitions. [2020-10-23 20:20:30,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 752 transitions. [2020-10-23 20:20:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-23 20:20:30,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:30,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:30,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:20:30,597 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 20:20:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:30,598 INFO L82 PathProgramCache]: Analyzing trace with hash 610129114, now seen corresponding path program 1 times [2020-10-23 20:20:30,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:30,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409166722] [2020-10-23 20:20:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:30,602 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:30,963 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 20:20:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:20:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:31,276 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 20:20:31,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409166722] [2020-10-23 20:20:31,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:31,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:31,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88937433] [2020-10-23 20:20:31,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:31,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:31,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:31,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:31,284 INFO L87 Difference]: Start difference. First operand 682 states and 752 transitions. Second operand 10 states. [2020-10-23 20:20:33,045 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:33,433 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:33,803 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:34,171 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:34,561 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:34,896 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:35,989 INFO L93 Difference]: Finished difference Result 1380 states and 1597 transitions. [2020-10-23 20:20:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:20:35,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 231 [2020-10-23 20:20:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:35,998 INFO L225 Difference]: With dead ends: 1380 [2020-10-23 20:20:35,998 INFO L226 Difference]: Without dead ends: 818 [2020-10-23 20:20:36,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:20:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-23 20:20:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 698. [2020-10-23 20:20:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-10-23 20:20:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 768 transitions. [2020-10-23 20:20:36,458 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 768 transitions. Word has length 231 [2020-10-23 20:20:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:36,458 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 768 transitions. [2020-10-23 20:20:36,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 768 transitions. [2020-10-23 20:20:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-23 20:20:36,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:36,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:36,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:20:36,473 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 20:20:36,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2000729990, now seen corresponding path program 1 times [2020-10-23 20:20:36,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:36,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145170367] [2020-10-23 20:20:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:36,483 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,889 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:36,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 20:20:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:20:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:37,217 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 20:20:37,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145170367] [2020-10-23 20:20:37,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:37,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:20:37,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524200684] [2020-10-23 20:20:37,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:20:37,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:37,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:20:37,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:20:37,230 INFO L87 Difference]: Start difference. First operand 698 states and 768 transitions. Second operand 13 states. [2020-10-23 20:20:38,032 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:38,348 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:38,674 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:39,010 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:39,346 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:40,584 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:40,913 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:41,280 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:41,665 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:42,007 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:43,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:43,345 INFO L93 Difference]: Finished difference Result 1414 states and 1633 transitions. [2020-10-23 20:20:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:20:43,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 231 [2020-10-23 20:20:43,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:43,352 INFO L225 Difference]: With dead ends: 1414 [2020-10-23 20:20:43,352 INFO L226 Difference]: Without dead ends: 836 [2020-10-23 20:20:43,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:20:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-23 20:20:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 710. [2020-10-23 20:20:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2020-10-23 20:20:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 780 transitions. [2020-10-23 20:20:43,615 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 780 transitions. Word has length 231 [2020-10-23 20:20:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:43,616 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 780 transitions. [2020-10-23 20:20:43,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:20:43,616 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 780 transitions. [2020-10-23 20:20:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-23 20:20:43,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:43,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:43,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:20:43,622 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 20:20:43,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:43,622 INFO L82 PathProgramCache]: Analyzing trace with hash 239482333, now seen corresponding path program 1 times [2020-10-23 20:20:43,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:43,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500056471] [2020-10-23 20:20:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:43,627 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:43,980 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:43,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 20:20:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:20:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:44,251 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 20:20:44,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500056471] [2020-10-23 20:20:44,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:44,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:20:44,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551532632] [2020-10-23 20:20:44,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:20:44,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:44,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:20:44,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:20:44,253 INFO L87 Difference]: Start difference. First operand 710 states and 780 transitions. Second operand 7 states. [2020-10-23 20:20:44,959 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:45,773 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:48,591 INFO L93 Difference]: Finished difference Result 2035 states and 2383 transitions. [2020-10-23 20:20:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:20:48,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-23 20:20:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:48,601 INFO L225 Difference]: With dead ends: 2035 [2020-10-23 20:20:48,601 INFO L226 Difference]: Without dead ends: 1445 [2020-10-23 20:20:48,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:20:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-10-23 20:20:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1326. [2020-10-23 20:20:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2020-10-23 20:20:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1487 transitions. [2020-10-23 20:20:49,186 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1487 transitions. Word has length 231 [2020-10-23 20:20:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:49,187 INFO L481 AbstractCegarLoop]: Abstraction has 1326 states and 1487 transitions. [2020-10-23 20:20:49,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:20:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1487 transitions. [2020-10-23 20:20:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-23 20:20:49,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:49,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:49,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:20:49,193 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 20:20:49,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:49,194 INFO L82 PathProgramCache]: Analyzing trace with hash -528144328, now seen corresponding path program 1 times [2020-10-23 20:20:49,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:49,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798110293] [2020-10-23 20:20:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:49,198 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,661 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:20:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:20:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 20:20:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:20:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:50,033 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 20:20:50,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798110293] [2020-10-23 20:20:50,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:50,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:50,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933521539] [2020-10-23 20:20:50,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:50,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:50,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:50,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:50,037 INFO L87 Difference]: Start difference. First operand 1326 states and 1487 transitions. Second operand 14 states. [2020-10-23 20:20:51,085 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:20:52,109 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:53,644 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:20:54,302 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:20:54,768 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:55,159 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:55,816 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:20:56,216 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:56,627 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:56,971 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:59,417 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:59,725 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:00,069 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:00,878 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:21:02,136 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:21:02,860 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:21:03,680 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:21:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:04,628 INFO L93 Difference]: Finished difference Result 3642 states and 4240 transitions. [2020-10-23 20:21:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-23 20:21:04,632 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 236 [2020-10-23 20:21:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:04,653 INFO L225 Difference]: With dead ends: 3642 [2020-10-23 20:21:04,653 INFO L226 Difference]: Without dead ends: 2703 [2020-10-23 20:21:04,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=494, Invalid=1858, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 20:21:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2020-10-23 20:21:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2295. [2020-10-23 20:21:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-10-23 20:21:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2549 transitions. [2020-10-23 20:21:05,710 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2549 transitions. Word has length 236 [2020-10-23 20:21:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:05,712 INFO L481 AbstractCegarLoop]: Abstraction has 2295 states and 2549 transitions. [2020-10-23 20:21:05,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:21:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2549 transitions. [2020-10-23 20:21:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-23 20:21:05,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:05,720 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, 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 20:21:05,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:21:05,721 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 20:21:05,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:05,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2018121136, now seen corresponding path program 1 times [2020-10-23 20:21:05,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:05,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602838900] [2020-10-23 20:21:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:06,135 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 93 [2020-10-23 20:21:06,328 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:06,745 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 93 [2020-10-23 20:21:06,908 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:07,314 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-10-23 20:21:07,444 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 20:21:07,799 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2020-10-23 20:21:07,910 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-23 20:21:08,240 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2020-10-23 20:21:08,690 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-23 20:21:08,800 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 20:21:09,142 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2020-10-23 20:21:09,250 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:21:09,638 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-10-23 20:21:09,807 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 20:21:10,218 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2020-10-23 20:21:10,346 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-23 20:21:10,747 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:21:10,878 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 20:21:11,209 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-23 20:21:11,318 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 20:21:11,682 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2020-10-23 20:21:11,803 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-23 20:21:12,151 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2020-10-23 20:21:12,639 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 93 [2020-10-23 20:21:12,778 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:13,574 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:14,334 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:15,119 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:15,935 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:16,685 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:17,440 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:18,193 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:18,932 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:18,935 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:19,662 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:20,459 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:21,232 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:21,955 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:22,712 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:23,514 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:24,250 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 20:21:24,982 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-23 20:21:24,986 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:25,777 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:26,567 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:27,350 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:28,132 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:28,936 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:29,737 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:30,503 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:31,294 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:31,299 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:32,584 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:21:33,815 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:21:35,032 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:21:36,108 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-23 20:21:36,123 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:37,290 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:38,447 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:39,601 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:40,743 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:40,756 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:41,855 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 268 [2020-10-23 20:21:43,013 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 269 DAG size of output: 268 [2020-10-23 20:21:44,092 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 268 [2020-10-23 20:21:45,166 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 268 [2020-10-23 20:21:45,178 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:46,233 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:47,257 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:48,367 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:49,439 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 265 [2020-10-23 20:21:49,449 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:50,213 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:51,035 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:51,859 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:52,702 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:53,538 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:54,379 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:55,158 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:56,011 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 210 [2020-10-23 20:21:56,014 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:57,142 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:21:58,236 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:21:59,417 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:22:00,585 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:22:00,592 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:01,425 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:02,293 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:03,139 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:03,941 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:04,725 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:05,511 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:06,292 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:07,083 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 212 [2020-10-23 20:22:07,086 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:08,126 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:09,144 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:10,212 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:11,245 WARN L193 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:11,254 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:12,280 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:22:13,334 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:22:14,381 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:22:15,416 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 273 [2020-10-23 20:22:15,426 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:16,468 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:17,497 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:18,497 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:19,548 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 273 [2020-10-23 20:22:19,553 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:20,294 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 207 [2020-10-23 20:22:21,026 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:22:21,755 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 207 [2020-10-23 20:22:22,529 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 207 [2020-10-23 20:22:23,301 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:22:24,077 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:22:24,847 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2020-10-23 20:22:25,613 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 207 [2020-10-23 20:22:25,615 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:22:25,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:22:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:22:26,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:22:26,538 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:22:26,538 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:22:26,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:22:26,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:22:26 BoogieIcfgContainer [2020-10-23 20:22:26,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:22:26,591 INFO L168 Benchmark]: Toolchain (without parser) took 145219.14 ms. Allocated memory was 151.0 MB in the beginning and 1.1 GB in the end (delta: 941.6 MB). Free memory was 126.3 MB in the beginning and 558.3 MB in the end (delta: -432.0 MB). Peak memory consumption was 510.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:26,591 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 125.6 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:22:26,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:26,592 INFO L168 Benchmark]: Boogie Preprocessor took 177.41 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 100.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:26,592 INFO L168 Benchmark]: RCFGBuilder took 1533.45 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 100.2 MB in the beginning and 152.5 MB in the end (delta: -52.2 MB). Peak memory consumption was 53.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:26,593 INFO L168 Benchmark]: TraceAbstraction took 142707.29 ms. Allocated memory was 187.7 MB in the beginning and 1.1 GB in the end (delta: 904.9 MB). Free memory was 152.0 MB in the beginning and 558.3 MB in the end (delta: -406.3 MB). Peak memory consumption was 498.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:26,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 125.6 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 787.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 177.41 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 100.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1533.45 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 100.2 MB in the beginning and 152.5 MB in the end (delta: -52.2 MB). Peak memory consumption was 53.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 142707.29 ms. Allocated memory was 187.7 MB in the beginning and 1.1 GB in the end (delta: 904.9 MB). Free memory was 152.0 MB in the beginning and 558.3 MB in the end (delta: -406.3 MB). Peak memory consumption was 498.1 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; [L408] int cleanupTimeShifts = 4; [L589] int pumpRunning = 0; [L590] int systemActive = 1; [L780] int waterLevel = 1; [L781] int methaneLevelCritical = 0; [L875] int switchedOnBeforeTS ; [L491] int retValue_acc ; [L492] int tmp ; [L496] FCALL select_helpers() [L497] FCALL select_features() [L498] CALL, EXPR valid_product() [L950] int retValue_acc ; [L953] retValue_acc = 1 [L954] return (retValue_acc); [L498] RET, EXPR valid_product() [L498] tmp = valid_product() [L500] COND TRUE \read(tmp) [L502] FCALL setup() [L503] CALL runTest() [L481] CALL __utac_acc__Specification5_spec__1() [L880] switchedOnBeforeTS = 0 [L481] RET __utac_acc__Specification5_spec__1() [L482] CALL test() [L516] int splverifierCounter ; [L517] int tmp ; [L518] int tmp___0 ; [L519] int tmp___1 ; [L520] int tmp___2 ; [L523] splverifierCounter = 0 [L525] COND TRUE 1 [L527] COND TRUE splverifierCounter < 4 [L533] tmp = __VERIFIER_nondet_int() [L535] COND TRUE \read(tmp) [L537] CALL waterRise() [L798] COND TRUE waterLevel < 2 [L799] waterLevel = waterLevel + 1 [L537] RET waterRise() [L543] tmp___0 = __VERIFIER_nondet_int() [L545] COND FALSE !(\read(tmp___0)) [L553] tmp___2 = __VERIFIER_nondet_int() [L555] COND TRUE \read(tmp___2) [L570] CALL timeShift() [L599] CALL __utac_acc__Specification5_spec__2() [L889] CALL, EXPR isPumpRunning() [L700] int retValue_acc ; [L703] retValue_acc = pumpRunning [L704] return (retValue_acc); [L889] RET, EXPR isPumpRunning() [L889] switchedOnBeforeTS = isPumpRunning() [L599] RET __utac_acc__Specification5_spec__2() [L601] COND FALSE !(\read(pumpRunning)) [L608] COND TRUE \read(systemActive) [L610] CALL processEnvironment() [L630] int tmp ; [L633] COND TRUE ! pumpRunning [L635] CALL, EXPR isHighWaterLevel() [L745] int retValue_acc ; [L746] int tmp ; [L747] int tmp___0 ; [L751] CALL, EXPR isHighWaterSensorDry() [L860] int retValue_acc ; [L863] COND FALSE !(waterLevel < 2) [L867] retValue_acc = 0 [L868] return (retValue_acc); [L751] RET, EXPR isHighWaterSensorDry() [L751] tmp = isHighWaterSensorDry() [L753] COND FALSE !(\read(tmp)) [L756] tmp___0 = 1 [L758] retValue_acc = tmp___0 [L759] return (retValue_acc); [L635] RET, EXPR isHighWaterLevel() [L635] tmp = isHighWaterLevel() [L637] COND TRUE \read(tmp) [L639] CALL activatePump() [L664] int tmp ; [L668] CALL, EXPR isMethaneAlarm() [L689] int retValue_acc ; [L693] CALL, EXPR isMethaneLevelCritical() [L819] int retValue_acc ; [L822] retValue_acc = methaneLevelCritical [L823] return (retValue_acc); [L693] RET, EXPR isMethaneLevelCritical() [L693] retValue_acc = isMethaneLevelCritical() [L695] return (retValue_acc); [L668] RET, EXPR isMethaneAlarm() [L668] tmp = isMethaneAlarm() [L670] COND FALSE !(\read(tmp)) [L674] CALL activatePump__wrappee__highWaterSensor() [L658] pumpRunning = 1 [L674] RET activatePump__wrappee__highWaterSensor() [L639] RET activatePump() [L610] RET processEnvironment() [L616] CALL __utac_acc__Specification5_spec__3() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L851] int retValue_acc ; [L854] retValue_acc = waterLevel [L855] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp != 2) [L616] RET __utac_acc__Specification5_spec__3() [L570] RET timeShift() [L525] COND TRUE 1 [L527] COND TRUE splverifierCounter < 4 [L533] tmp = __VERIFIER_nondet_int() [L535] COND FALSE !(\read(tmp)) [L543] tmp___0 = __VERIFIER_nondet_int() [L545] COND FALSE !(\read(tmp___0)) [L553] tmp___2 = __VERIFIER_nondet_int() [L555] COND TRUE \read(tmp___2) [L570] CALL timeShift() [L599] CALL __utac_acc__Specification5_spec__2() [L889] CALL, EXPR isPumpRunning() [L700] int retValue_acc ; [L703] retValue_acc = pumpRunning [L704] return (retValue_acc); [L889] RET, EXPR isPumpRunning() [L889] switchedOnBeforeTS = isPumpRunning() [L599] RET __utac_acc__Specification5_spec__2() [L601] COND TRUE \read(pumpRunning) [L603] CALL lowerWaterLevel() [L786] COND TRUE waterLevel > 0 [L787] waterLevel = waterLevel - 1 [L603] RET lowerWaterLevel() [L608] COND TRUE \read(systemActive) [L610] CALL processEnvironment() [L630] int tmp ; [L633] COND FALSE !(! pumpRunning) [L648] FCALL processEnvironment__wrappee__base() [L610] RET processEnvironment() [L616] CALL __utac_acc__Specification5_spec__3() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L851] int retValue_acc ; [L854] retValue_acc = waterLevel [L855] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND TRUE tmp != 2 [L904] CALL, EXPR isPumpRunning() [L700] int retValue_acc ; [L703] retValue_acc = pumpRunning [L704] return (retValue_acc); [L904] RET, EXPR isPumpRunning() [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) [L907] COND TRUE ! switchedOnBeforeTS [L909] CALL __automaton_fail() [L963] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product43.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 647 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 142.5s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 50.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2462 SDtfs, 5918 SDslu, 4892 SDs, 0 SdLazy, 9661 SolverSat, 1778 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 446 GetRequests, 286 SyntacticMatches, 3 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 23.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2295occurred 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: 3.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 1161 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...