/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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:23:09,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:23:09,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:23:09,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:23:09,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:23:09,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:23:09,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:23:09,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:23:09,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:23:09,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:23:09,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:23:09,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:23:09,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:23:09,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:23:09,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:23:09,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:23:09,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:23:09,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:23:09,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:23:09,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:23:09,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:23:09,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:23:09,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:23:09,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:23:09,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:23:09,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:23:09,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:23:09,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:23:09,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:23:09,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:23:09,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:23:09,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:23:09,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:23:09,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:23:09,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:23:09,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:23:09,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:23:09,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:23:09,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:23:09,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:23:09,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:23:09,468 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 20:23:09,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:23:09,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:23:09,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:23:09,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:23:09,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:23:09,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:23:09,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:23:09,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:23:09,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:23:09,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:23:09,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:23:09,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:23:09,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:23:09,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:23:09,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:23:09,494 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:23:09,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:23:09,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:23:09,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:23:09,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:23:09,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:23:09,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:23:09,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:23:09,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:23:09,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:23:09,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:23:09,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:23:09,958 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:23:09,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2020-10-23 20:23:10,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3912d862/bc759751494246debbb4428beac7f9cb/FLAG7af77d1d6 [2020-10-23 20:23:10,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:23:10,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2020-10-23 20:23:10,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3912d862/bc759751494246debbb4428beac7f9cb/FLAG7af77d1d6 [2020-10-23 20:23:11,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3912d862/bc759751494246debbb4428beac7f9cb [2020-10-23 20:23:11,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:23:11,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:23:11,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:23:11,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:23:11,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:23:11,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d7cd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11, skipping insertion in model container [2020-10-23 20:23:11,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:23:11,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:23:11,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:23:11,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:23:11,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:23:11,712 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:23:11,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11 WrapperNode [2020-10-23 20:23:11,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:23:11,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:23:11,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:23:11,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:23:11,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (1/1) ... [2020-10-23 20:23:11,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:23:11,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:23:11,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:23:11,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:23:11,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (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 20:23:11,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:23:11,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:23:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:23:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:23:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:23:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:23:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:23:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:23:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:23:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:23:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:23:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:23:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:23:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:23:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:23:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:23:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:23:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:23:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:23:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:23:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:23:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:23:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:23:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:23:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:23:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:23:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:23:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:23:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:23:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:23:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:23:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:23:11,973 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:23:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:23:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:23:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:23:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:23:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:23:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:23:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:23:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:23:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:23:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:23:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:23:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:23:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:23:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:23:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:23:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:23:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:23:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:23:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:23:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:23:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:23:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:23:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:23:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:23:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:23:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:23:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:23:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:23:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:23:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:23:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:23:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:23:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:23:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:23:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:23:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:23:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:23:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:23:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:23:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:23:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:23:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:23:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:23:11,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:23:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:23:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:23:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:23:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:23:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:23:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:23:11,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:23:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:23:13,327 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:23:13,327 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:23:13,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:13 BoogieIcfgContainer [2020-10-23 20:23:13,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:23:13,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:23:13,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:23:13,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:23:13,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:23:11" (1/3) ... [2020-10-23 20:23:13,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd02049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:13, skipping insertion in model container [2020-10-23 20:23:13,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:11" (2/3) ... [2020-10-23 20:23:13,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd02049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:13, skipping insertion in model container [2020-10-23 20:23:13,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:13" (3/3) ... [2020-10-23 20:23:13,340 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2020-10-23 20:23:13,352 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:23:13,358 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:23:13,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:23:13,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:23:13,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:23:13,394 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:23:13,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:23:13,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:23:13,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:23:13,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:23:13,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:23:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states. [2020-10-23 20:23:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:23:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:13,446 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 20:23:13,447 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 20:23:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:13,454 INFO L82 PathProgramCache]: Analyzing trace with hash -507615620, now seen corresponding path program 1 times [2020-10-23 20:23:13,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:13,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401350957] [2020-10-23 20:23:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:13,575 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,404 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:23:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:23:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:23:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:14,614 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 20:23:14,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401350957] [2020-10-23 20:23:14,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:14,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:23:14,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821250145] [2020-10-23 20:23:14,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:23:14,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:14,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:23:14,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:23:14,641 INFO L87 Difference]: Start difference. First operand 374 states. Second operand 4 states. [2020-10-23 20:23:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:16,830 INFO L93 Difference]: Finished difference Result 604 states and 710 transitions. [2020-10-23 20:23:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:23:16,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:23:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:16,857 INFO L225 Difference]: With dead ends: 604 [2020-10-23 20:23:16,858 INFO L226 Difference]: Without dead ends: 371 [2020-10-23 20:23:16,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:23:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-23 20:23:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 320. [2020-10-23 20:23:17,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-23 20:23:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 352 transitions. [2020-10-23 20:23:17,119 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 352 transitions. Word has length 166 [2020-10-23 20:23:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:17,123 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 352 transitions. [2020-10-23 20:23:17,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:23:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 352 transitions. [2020-10-23 20:23:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:23:17,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:17,137 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 20:23:17,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:23:17,137 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 20:23:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:17,138 INFO L82 PathProgramCache]: Analyzing trace with hash 47466092, now seen corresponding path program 1 times [2020-10-23 20:23:17,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:17,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746031231] [2020-10-23 20:23:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:17,150 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,643 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:23:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:23:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:23:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:17,780 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 20:23:17,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746031231] [2020-10-23 20:23:17,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:17,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:23:17,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504199104] [2020-10-23 20:23:17,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:23:17,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:17,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:23:17,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:23:17,788 INFO L87 Difference]: Start difference. First operand 320 states and 352 transitions. Second operand 5 states. [2020-10-23 20:23:18,686 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:20,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:20,336 INFO L93 Difference]: Finished difference Result 524 states and 594 transitions. [2020-10-23 20:23:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:23:20,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:23:20,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:20,342 INFO L225 Difference]: With dead ends: 524 [2020-10-23 20:23:20,342 INFO L226 Difference]: Without dead ends: 360 [2020-10-23 20:23:20,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:23:20,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-23 20:23:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 310. [2020-10-23 20:23:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-23 20:23:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 339 transitions. [2020-10-23 20:23:20,487 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 339 transitions. Word has length 167 [2020-10-23 20:23:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:20,488 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 339 transitions. [2020-10-23 20:23:20,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:23:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 339 transitions. [2020-10-23 20:23:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:23:20,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:20,492 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 20:23:20,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:23:20,492 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 20:23:20,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:20,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1184931963, now seen corresponding path program 1 times [2020-10-23 20:23:20,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:20,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717908586] [2020-10-23 20:23:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:20,497 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,051 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:23:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:23:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:23:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:21,317 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 20:23:21,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717908586] [2020-10-23 20:23:21,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:21,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:23:21,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772003729] [2020-10-23 20:23:21,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:23:21,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:21,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:23:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:23:21,322 INFO L87 Difference]: Start difference. First operand 310 states and 339 transitions. Second operand 10 states. [2020-10-23 20:23:22,006 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:22,486 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:22,871 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:23:23,264 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:23,700 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:24,082 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:25,518 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:29,000 INFO L93 Difference]: Finished difference Result 840 states and 968 transitions. [2020-10-23 20:23:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:23:29,000 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:23:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:29,006 INFO L225 Difference]: With dead ends: 840 [2020-10-23 20:23:29,007 INFO L226 Difference]: Without dead ends: 650 [2020-10-23 20:23:29,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:23:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-23 20:23:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 571. [2020-10-23 20:23:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-23 20:23:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 645 transitions. [2020-10-23 20:23:29,327 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 645 transitions. Word has length 176 [2020-10-23 20:23:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:29,329 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 645 transitions. [2020-10-23 20:23:29,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:23:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 645 transitions. [2020-10-23 20:23:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:23:29,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:29,335 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 20:23:29,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:23:29,336 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 20:23:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:29,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2045406384, now seen corresponding path program 1 times [2020-10-23 20:23:29,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:29,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666733528] [2020-10-23 20:23:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:29,345 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,790 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:23:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:23:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:23:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:23:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:29,974 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 20:23:29,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666733528] [2020-10-23 20:23:29,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:29,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:23:29,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496871475] [2020-10-23 20:23:29,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:23:29,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:29,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:23:29,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:23:29,981 INFO L87 Difference]: Start difference. First operand 571 states and 645 transitions. Second operand 10 states. [2020-10-23 20:23:30,626 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:31,637 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:32,038 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:33,658 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:34,046 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:34,421 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:34,960 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:35,364 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:35,827 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:37,144 INFO L93 Difference]: Finished difference Result 1325 states and 1580 transitions. [2020-10-23 20:23:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:23:37,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:23:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:37,152 INFO L225 Difference]: With dead ends: 1325 [2020-10-23 20:23:37,152 INFO L226 Difference]: Without dead ends: 874 [2020-10-23 20:23:37,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:23:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-10-23 20:23:37,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 785. [2020-10-23 20:23:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-23 20:23:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 883 transitions. [2020-10-23 20:23:37,538 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 883 transitions. Word has length 185 [2020-10-23 20:23:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:37,539 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 883 transitions. [2020-10-23 20:23:37,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:23:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 883 transitions. [2020-10-23 20:23:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:23:37,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:37,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:37,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:23:37,545 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 20:23:37,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:37,546 INFO L82 PathProgramCache]: Analyzing trace with hash 94495918, now seen corresponding path program 1 times [2020-10-23 20:23:37,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:37,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139281630] [2020-10-23 20:23:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:37,551 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:37,966 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:23:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:23:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:23:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:23:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:38,289 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 20:23:38,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139281630] [2020-10-23 20:23:38,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:38,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:23:38,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752153239] [2020-10-23 20:23:38,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:23:38,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:38,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:23:38,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:23:38,292 INFO L87 Difference]: Start difference. First operand 785 states and 883 transitions. Second operand 10 states. [2020-10-23 20:23:40,271 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:40,683 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:23:41,119 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:23:41,544 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:41,951 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:42,355 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:44,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:44,073 INFO L93 Difference]: Finished difference Result 1589 states and 1885 transitions. [2020-10-23 20:23:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:23:44,074 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 241 [2020-10-23 20:23:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:44,081 INFO L225 Difference]: With dead ends: 1589 [2020-10-23 20:23:44,081 INFO L226 Difference]: Without dead ends: 924 [2020-10-23 20:23:44,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:23:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-10-23 20:23:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2020-10-23 20:23:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-10-23 20:23:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 903 transitions. [2020-10-23 20:23:44,457 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 903 transitions. Word has length 241 [2020-10-23 20:23:44,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:44,458 INFO L481 AbstractCegarLoop]: Abstraction has 804 states and 903 transitions. [2020-10-23 20:23:44,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:23:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 903 transitions. [2020-10-23 20:23:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:23:44,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:44,465 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, 1, 1, 1, 1, 1] [2020-10-23 20:23:44,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:23:44,466 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 20:23:44,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:44,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1361016754, now seen corresponding path program 1 times [2020-10-23 20:23:44,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:44,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177625115] [2020-10-23 20:23:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:44,472 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:44,964 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:23:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:23:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:23:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:23:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:45,295 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 20:23:45,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177625115] [2020-10-23 20:23:45,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:45,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:23:45,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328098244] [2020-10-23 20:23:45,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:23:45,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:45,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:23:45,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:23:45,301 INFO L87 Difference]: Start difference. First operand 804 states and 903 transitions. Second operand 13 states. [2020-10-23 20:23:46,114 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:46,557 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:23:46,974 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:47,387 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:47,761 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:49,186 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:49,604 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:50,071 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:50,540 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:50,952 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:52,869 INFO L93 Difference]: Finished difference Result 1626 states and 1923 transitions. [2020-10-23 20:23:52,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:23:52,870 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 241 [2020-10-23 20:23:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:52,876 INFO L225 Difference]: With dead ends: 1626 [2020-10-23 20:23:52,876 INFO L226 Difference]: Without dead ends: 942 [2020-10-23 20:23:52,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:23:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-10-23 20:23:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 816. [2020-10-23 20:23:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-23 20:23:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 915 transitions. [2020-10-23 20:23:53,160 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 915 transitions. Word has length 241 [2020-10-23 20:23:53,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:53,160 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 915 transitions. [2020-10-23 20:23:53,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:23:53,160 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 915 transitions. [2020-10-23 20:23:53,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:23:53,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:53,165 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, 1, 1, 1, 1, 1] [2020-10-23 20:23:53,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:23:53,165 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 20:23:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:53,166 INFO L82 PathProgramCache]: Analyzing trace with hash 312216625, now seen corresponding path program 1 times [2020-10-23 20:23:53,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:53,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219759586] [2020-10-23 20:23:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:53,170 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,598 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:23:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:23:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:23:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:23:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:23:53,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219759586] [2020-10-23 20:23:53,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:53,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:23:53,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567917443] [2020-10-23 20:23:53,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:23:53,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:53,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:23:53,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:23:53,889 INFO L87 Difference]: Start difference. First operand 816 states and 915 transitions. Second operand 7 states. [2020-10-23 20:23:54,573 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:55,453 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:59,052 INFO L93 Difference]: Finished difference Result 2333 states and 2782 transitions. [2020-10-23 20:23:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:23:59,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-23 20:23:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:59,063 INFO L225 Difference]: With dead ends: 2333 [2020-10-23 20:23:59,063 INFO L226 Difference]: Without dead ends: 1637 [2020-10-23 20:23:59,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:23:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-10-23 20:23:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1512. [2020-10-23 20:23:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1512 states. [2020-10-23 20:23:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1726 transitions. [2020-10-23 20:23:59,677 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1726 transitions. Word has length 241 [2020-10-23 20:23:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:59,678 INFO L481 AbstractCegarLoop]: Abstraction has 1512 states and 1726 transitions. [2020-10-23 20:23:59,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:23:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1726 transitions. [2020-10-23 20:23:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-23 20:23:59,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:59,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:59,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:23:59,683 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 20:23:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2106170431, now seen corresponding path program 1 times [2020-10-23 20:23:59,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:59,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411758543] [2020-10-23 20:23:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:59,687 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,275 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:24:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:24:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:24:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:24:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:24:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:24:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:24:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:24:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:24:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:24:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:24:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:24:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:24:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:24:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:24:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:24:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:24:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:24:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:24:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:24:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-23 20:24:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:00,707 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 20:24:00,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411758543] [2020-10-23 20:24:00,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:24:00,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:24:00,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364994525] [2020-10-23 20:24:00,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:24:00,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:24:00,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:24:00,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:24:00,710 INFO L87 Difference]: Start difference. First operand 1512 states and 1726 transitions. Second operand 14 states. [2020-10-23 20:24:01,816 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:24:02,919 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:24:04,541 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:24:05,383 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:24:05,911 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:24:06,368 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:24:07,149 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:24:07,605 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:24:08,117 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:24:08,515 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:24:12,474 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:24:13,262 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:24:13,687 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:24:14,367 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:24:16,121 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:24:16,916 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:24:17,808 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:24:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:24:19,080 INFO L93 Difference]: Finished difference Result 4398 states and 5272 transitions. [2020-10-23 20:24:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-23 20:24:19,081 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 246 [2020-10-23 20:24:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:24:19,102 INFO L225 Difference]: With dead ends: 4398 [2020-10-23 20:24:19,102 INFO L226 Difference]: Without dead ends: 3293 [2020-10-23 20:24:19,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 20:24:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2020-10-23 20:24:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2851. [2020-10-23 20:24:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2020-10-23 20:24:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 3231 transitions. [2020-10-23 20:24:20,549 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 3231 transitions. Word has length 246 [2020-10-23 20:24:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:24:20,550 INFO L481 AbstractCegarLoop]: Abstraction has 2851 states and 3231 transitions. [2020-10-23 20:24:20,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:24:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 3231 transitions. [2020-10-23 20:24:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-23 20:24:20,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:20,556 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, 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, 1, 1, 1, 1, 1, 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 20:24:20,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:24:20,557 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 20:24:20,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:20,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2087632256, now seen corresponding path program 1 times [2020-10-23 20:24:20,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:20,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641437736] [2020-10-23 20:24:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:20,605 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:24:20,610 INFO L168 Benchmark]: Toolchain (without parser) took 69507.26 ms. Allocated memory was 165.7 MB in the beginning and 934.3 MB in the end (delta: 768.6 MB). Free memory was 140.6 MB in the beginning and 551.6 MB in the end (delta: -411.0 MB). Peak memory consumption was 358.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:20,610 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 165.7 MB. Free memory is still 140.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:20,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.13 ms. Allocated memory is still 165.7 MB. Free memory was 139.9 MB in the beginning and 116.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:20,612 INFO L168 Benchmark]: Boogie Preprocessor took 133.00 ms. Allocated memory is still 165.7 MB. Free memory was 116.9 MB in the beginning and 112.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:20,613 INFO L168 Benchmark]: RCFGBuilder took 1482.09 ms. Allocated memory was 165.7 MB in the beginning and 210.8 MB in the end (delta: 45.1 MB). Free memory was 112.8 MB in the beginning and 166.5 MB in the end (delta: -53.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:20,613 INFO L168 Benchmark]: TraceAbstraction took 67275.85 ms. Allocated memory was 210.8 MB in the beginning and 934.3 MB in the end (delta: 723.5 MB). Free memory was 166.0 MB in the beginning and 551.6 MB in the end (delta: -385.6 MB). Peak memory consumption was 338.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:20,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 165.7 MB. Free memory is still 140.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 605.13 ms. Allocated memory is still 165.7 MB. Free memory was 139.9 MB in the beginning and 116.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 133.00 ms. Allocated memory is still 165.7 MB. Free memory was 116.9 MB in the beginning and 112.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1482.09 ms. Allocated memory was 165.7 MB in the beginning and 210.8 MB in the end (delta: 45.1 MB). Free memory was 112.8 MB in the beginning and 166.5 MB in the end (delta: -53.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 67275.85 ms. Allocated memory was 210.8 MB in the beginning and 934.3 MB in the end (delta: 723.5 MB). Free memory was 166.0 MB in the beginning and 551.6 MB in the end (delta: -385.6 MB). Peak memory consumption was 338.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...