/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_spec4_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:11:44,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:11:44,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:11:44,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:11:44,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:11:44,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:11:44,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:11:44,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:11:44,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:11:44,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:11:44,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:11:44,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:11:44,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:11:44,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:11:44,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:11:44,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:11:44,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:11:44,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:11:44,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:11:44,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:11:44,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:11:44,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:11:44,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:11:44,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:11:44,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:11:44,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:11:44,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:11:44,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:11:44,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:11:44,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:11:44,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:11:44,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:11:44,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:11:44,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:11:44,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:11:44,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:11:44,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:11:44,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:11:44,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:11:44,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:11:44,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:11:44,831 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 20:11:44,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:11:44,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:11:44,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:11:44,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:11:44,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:11:44,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:11:44,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:11:44,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:11:44,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:11:44,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:11:44,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:11:44,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:11:44,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:11:44,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:11:44,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:11:44,868 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:11:44,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:11:44,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:11:44,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:11:44,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:11:44,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:11:44,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:11:44,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:11:45,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:11:45,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:11:45,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:11:45,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:11:45,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:11:45,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-10-23 20:11:45,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66087b0a6/36340ae6b69048608b7cb1a891a86d6e/FLAG9104e0bbc [2020-10-23 20:11:46,130 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:11:46,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-10-23 20:11:46,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66087b0a6/36340ae6b69048608b7cb1a891a86d6e/FLAG9104e0bbc [2020-10-23 20:11:46,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66087b0a6/36340ae6b69048608b7cb1a891a86d6e [2020-10-23 20:11:46,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:11:46,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:11:46,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:11:46,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:11:46,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:11:46,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:11:46" (1/1) ... [2020-10-23 20:11:46,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e3f4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:46, skipping insertion in model container [2020-10-23 20:11:46,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:11:46" (1/1) ... [2020-10-23 20:11:46,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:11:46,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:11:46,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:11:46,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:11:47,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:11:47,109 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:11:47,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47 WrapperNode [2020-10-23 20:11:47,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:11:47,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:11:47,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:11:47,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:11:47,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (1/1) ... [2020-10-23 20:11:47,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (1/1) ... [2020-10-23 20:11:47,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (1/1) ... [2020-10-23 20:11:47,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (1/1) ... [2020-10-23 20:11:47,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (1/1) ... [2020-10-23 20:11:47,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (1/1) ... [2020-10-23 20:11:47,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (1/1) ... [2020-10-23 20:11:47,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:11:47,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:11:47,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:11:47,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:11:47,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (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 20:11:47,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:11:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:11:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:11:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:11:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:11:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:11:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:11:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:11:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:11:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:11:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:11:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:11:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:11:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:11:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:11:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:11:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:11:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:11:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:11:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:11:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:11:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:11:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:11:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:11:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:11:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:11:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:11:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:11:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:11:49,027 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:11:49,028 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:11:49,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:11:49 BoogieIcfgContainer [2020-10-23 20:11:49,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:11:49,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:11:49,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:11:49,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:11:49,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:11:46" (1/3) ... [2020-10-23 20:11:49,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a626cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:11:49, skipping insertion in model container [2020-10-23 20:11:49,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:11:47" (2/3) ... [2020-10-23 20:11:49,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a626cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:11:49, skipping insertion in model container [2020-10-23 20:11:49,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:11:49" (3/3) ... [2020-10-23 20:11:49,041 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-10-23 20:11:49,053 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:11:49,060 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:11:49,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:11:49,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:11:49,100 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:11:49,100 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:11:49,100 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:11:49,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:11:49,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:11:49,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:11:49,101 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:11:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-23 20:11:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:11:49,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:49,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:11:49,154 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 20:11:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:49,161 INFO L82 PathProgramCache]: Analyzing trace with hash 639783872, now seen corresponding path program 1 times [2020-10-23 20:11:49,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:49,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548422494] [2020-10-23 20:11:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:49,241 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:11:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,199 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:11:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:11:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:11:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:11:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:11:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:11:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:11:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:11:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:50,422 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 20:11:50,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548422494] [2020-10-23 20:11:50,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:11:50,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:11:50,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725156914] [2020-10-23 20:11:50,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:11:50,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:11:50,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:11:50,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:11:50,465 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2020-10-23 20:11:52,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:11:52,206 INFO L93 Difference]: Finished difference Result 516 states and 611 transitions. [2020-10-23 20:11:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:11:52,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:11:52,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:11:52,228 INFO L225 Difference]: With dead ends: 516 [2020-10-23 20:11:52,228 INFO L226 Difference]: Without dead ends: 318 [2020-10-23 20:11:52,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:11:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-23 20:11:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 274. [2020-10-23 20:11:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 20:11:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 297 transitions. [2020-10-23 20:11:52,406 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 297 transitions. Word has length 148 [2020-10-23 20:11:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:11:52,408 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 297 transitions. [2020-10-23 20:11:52,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:11:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 297 transitions. [2020-10-23 20:11:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:11:52,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:52,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:11:52,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:11:52,414 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 20:11:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:52,414 INFO L82 PathProgramCache]: Analyzing trace with hash -937452319, now seen corresponding path program 1 times [2020-10-23 20:11:52,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:52,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785380907] [2020-10-23 20:11:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:52,420 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:11:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:52,934 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:11:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:11:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:11:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:11:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:11:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:11:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:11:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:11:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:53,023 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 20:11:53,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785380907] [2020-10-23 20:11:53,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:11:53,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:11:53,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679383185] [2020-10-23 20:11:53,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:11:53,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:11:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:11:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:11:53,027 INFO L87 Difference]: Start difference. First operand 274 states and 297 transitions. Second operand 4 states. [2020-10-23 20:11:53,733 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:11:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:11:54,933 INFO L93 Difference]: Finished difference Result 426 states and 478 transitions. [2020-10-23 20:11:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:11:54,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:11:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:11:54,938 INFO L225 Difference]: With dead ends: 426 [2020-10-23 20:11:54,938 INFO L226 Difference]: Without dead ends: 301 [2020-10-23 20:11:54,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:11:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-23 20:11:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 264. [2020-10-23 20:11:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 20:11:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 284 transitions. [2020-10-23 20:11:55,049 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 284 transitions. Word has length 149 [2020-10-23 20:11:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:11:55,050 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 284 transitions. [2020-10-23 20:11:55,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:11:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 284 transitions. [2020-10-23 20:11:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:11:55,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:55,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:11:55,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:11:55,054 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 20:11:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:55,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1234992950, now seen corresponding path program 1 times [2020-10-23 20:11:55,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:55,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465456529] [2020-10-23 20:11:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:55,059 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:11:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,465 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:11:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:11:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:11:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:11:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:11:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:11:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:11:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:11:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:11:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:11:55,615 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 20:11:55,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465456529] [2020-10-23 20:11:55,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:11:55,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:11:55,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699063084] [2020-10-23 20:11:55,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:11:55,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:11:55,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:11:55,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:11:55,618 INFO L87 Difference]: Start difference. First operand 264 states and 284 transitions. Second operand 10 states. [2020-10-23 20:11:56,272 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:11:56,630 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:11:56,954 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:11:57,261 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:57,592 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:11:57,830 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:11:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:11:59,680 INFO L93 Difference]: Finished difference Result 472 states and 540 transitions. [2020-10-23 20:11:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:11:59,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:11:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:11:59,687 INFO L225 Difference]: With dead ends: 472 [2020-10-23 20:11:59,688 INFO L226 Difference]: Without dead ends: 323 [2020-10-23 20:11:59,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:11:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-23 20:11:59,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 264. [2020-10-23 20:11:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 20:11:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 283 transitions. [2020-10-23 20:11:59,796 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 283 transitions. Word has length 162 [2020-10-23 20:11:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:11:59,796 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 283 transitions. [2020-10-23 20:11:59,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:11:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 283 transitions. [2020-10-23 20:11:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-23 20:11:59,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:11:59,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:11:59,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:11:59,800 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 20:11:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:11:59,800 INFO L82 PathProgramCache]: Analyzing trace with hash 122376166, now seen corresponding path program 1 times [2020-10-23 20:11:59,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:11:59,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720952409] [2020-10-23 20:11:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:11:59,805 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:11:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,146 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:12:00,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:12:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:12:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:12:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:12:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:12:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:12:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:12:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:12:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:12:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:00,358 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 20:12:00,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720952409] [2020-10-23 20:12:00,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:12:00,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:12:00,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183536665] [2020-10-23 20:12:00,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:12:00,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:12:00,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:12:00,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:12:00,361 INFO L87 Difference]: Start difference. First operand 264 states and 283 transitions. Second operand 7 states. [2020-10-23 20:12:00,944 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:12:02,817 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:12:03,811 INFO L93 Difference]: Finished difference Result 667 states and 784 transitions. [2020-10-23 20:12:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:12:03,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-23 20:12:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:12:03,816 INFO L225 Difference]: With dead ends: 667 [2020-10-23 20:12:03,816 INFO L226 Difference]: Without dead ends: 518 [2020-10-23 20:12:03,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:12:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-23 20:12:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 389. [2020-10-23 20:12:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-23 20:12:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 416 transitions. [2020-10-23 20:12:04,010 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 416 transitions. Word has length 175 [2020-10-23 20:12:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:12:04,011 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 416 transitions. [2020-10-23 20:12:04,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:12:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 416 transitions. [2020-10-23 20:12:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-23 20:12:04,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:12:04,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:12:04,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:12:04,015 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 20:12:04,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:12:04,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1500846828, now seen corresponding path program 1 times [2020-10-23 20:12:04,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:12:04,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619552846] [2020-10-23 20:12:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:12:04,019 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:12:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,366 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:12:04,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:12:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:12:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:12:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:12:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:12:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:12:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:12:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:12:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:12:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 20:12:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 20:12:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:04,623 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 20:12:04,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619552846] [2020-10-23 20:12:04,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:12:04,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:12:04,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525134063] [2020-10-23 20:12:04,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:12:04,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:12:04,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:12:04,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:12:04,628 INFO L87 Difference]: Start difference. First operand 389 states and 416 transitions. Second operand 15 states. [2020-10-23 20:12:05,215 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:12:05,597 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:12:05,958 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:12:06,289 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:12:06,596 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:12:06,882 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:12:07,601 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:08,994 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:12:09,310 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:12:09,675 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:12:10,001 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:12:10,286 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:12:10,586 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:12:10,895 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:12:11,264 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:12:11,646 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:12:12,006 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:12:14,095 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:12:14,385 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:12:14,911 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:12:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:12:16,198 INFO L93 Difference]: Finished difference Result 1377 states and 1711 transitions. [2020-10-23 20:12:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 20:12:16,199 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 199 [2020-10-23 20:12:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:12:16,208 INFO L225 Difference]: With dead ends: 1377 [2020-10-23 20:12:16,208 INFO L226 Difference]: Without dead ends: 1103 [2020-10-23 20:12:16,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 20:12:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-10-23 20:12:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 804. [2020-10-23 20:12:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-10-23 20:12:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 886 transitions. [2020-10-23 20:12:16,604 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 886 transitions. Word has length 199 [2020-10-23 20:12:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:12:16,604 INFO L481 AbstractCegarLoop]: Abstraction has 804 states and 886 transitions. [2020-10-23 20:12:16,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:12:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 886 transitions. [2020-10-23 20:12:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-23 20:12:16,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:12:16,613 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 20:12:16,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:12:16,613 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 20:12:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:12:16,614 INFO L82 PathProgramCache]: Analyzing trace with hash 744747156, now seen corresponding path program 1 times [2020-10-23 20:12:16,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:12:16,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267859956] [2020-10-23 20:12:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:12:16,823 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:12:16,826 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:12:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,136 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:12:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:12:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:12:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:12:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:12:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:12:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 20:12:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:12:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:12:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:12:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:12:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:12:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:12:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:12:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 20:12:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 20:12:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-23 20:12:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-23 20:12:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 20:12:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:12:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:12:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-23 20:12:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-23 20:12:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:17,493 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 20:12:17,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267859956] [2020-10-23 20:12:17,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:12:17,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:12:17,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350669294] [2020-10-23 20:12:17,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:12:17,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:12:17,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:12:17,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:12:17,499 INFO L87 Difference]: Start difference. First operand 804 states and 886 transitions. Second operand 12 states. [2020-10-23 20:12:18,904 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:12:19,184 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:12:19,487 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:12:19,776 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:20,099 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:12:20,428 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:12:22,163 INFO L93 Difference]: Finished difference Result 1808 states and 2179 transitions. [2020-10-23 20:12:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:12:22,165 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 301 [2020-10-23 20:12:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:12:22,173 INFO L225 Difference]: With dead ends: 1808 [2020-10-23 20:12:22,173 INFO L226 Difference]: Without dead ends: 1119 [2020-10-23 20:12:22,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:12:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2020-10-23 20:12:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 831. [2020-10-23 20:12:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-23 20:12:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 915 transitions. [2020-10-23 20:12:22,563 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 915 transitions. Word has length 301 [2020-10-23 20:12:22,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:12:22,564 INFO L481 AbstractCegarLoop]: Abstraction has 831 states and 915 transitions. [2020-10-23 20:12:22,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:12:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 915 transitions. [2020-10-23 20:12:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-23 20:12:22,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:12:22,575 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 20:12:22,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:12:22,577 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 20:12:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:12:22,577 INFO L82 PathProgramCache]: Analyzing trace with hash 615091641, now seen corresponding path program 1 times [2020-10-23 20:12:22,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:12:22,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082683378] [2020-10-23 20:12:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:12:22,785 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:12:22,789 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:12:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,147 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:12:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:12:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:12:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:12:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:12:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:12:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 20:12:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:12:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:12:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:12:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:12:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:12:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:12:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:12:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-23 20:12:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-23 20:12:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-23 20:12:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-23 20:12:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-23 20:12:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:12:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:12:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:12:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-23 20:12:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-23 20:12:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:12:23,551 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 20:12:23,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082683378] [2020-10-23 20:12:23,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:12:23,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:12:23,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379525223] [2020-10-23 20:12:23,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:12:23,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:12:23,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:12:23,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:12:23,554 INFO L87 Difference]: Start difference. First operand 831 states and 915 transitions. Second operand 15 states. [2020-10-23 20:12:24,264 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:12:24,567 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:12:24,856 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:25,137 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:12:25,415 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:26,443 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:26,720 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:12:27,002 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:27,316 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:12:27,604 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:12:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:12:29,589 INFO L93 Difference]: Finished difference Result 1611 states and 1907 transitions. [2020-10-23 20:12:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:12:29,590 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 302 [2020-10-23 20:12:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:12:29,597 INFO L225 Difference]: With dead ends: 1611 [2020-10-23 20:12:29,597 INFO L226 Difference]: Without dead ends: 895 [2020-10-23 20:12:29,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:12:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-10-23 20:12:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 679. [2020-10-23 20:12:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-23 20:12:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 743 transitions. [2020-10-23 20:12:29,889 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 743 transitions. Word has length 302 [2020-10-23 20:12:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:12:29,890 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 743 transitions. [2020-10-23 20:12:29,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:12:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 743 transitions. [2020-10-23 20:12:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-23 20:12:29,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:12:29,896 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-23 20:12:29,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:12:29,896 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 20:12:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:12:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash -475287801, now seen corresponding path program 1 times [2020-10-23 20:12:29,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:12:29,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359680235] [2020-10-23 20:12:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:12:30,233 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-23 20:12:30,398 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 20:12:30,710 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-23 20:12:31,088 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-23 20:12:31,484 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-10-23 20:12:31,906 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-10-23 20:12:32,301 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-10-23 20:12:33,035 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2020-10-23 20:12:33,625 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2020-10-23 20:12:34,213 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2020-10-23 20:12:34,755 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2020-10-23 20:12:34,761 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:35,309 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 20:12:35,900 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2020-10-23 20:12:36,462 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 20:12:37,039 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2020-10-23 20:12:37,042 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:37,599 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2020-10-23 20:12:38,161 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2020-10-23 20:12:38,754 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2020-10-23 20:12:39,294 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 181 [2020-10-23 20:12:39,298 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:39,880 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 186 [2020-10-23 20:12:40,465 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 186 [2020-10-23 20:12:41,071 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 186 [2020-10-23 20:12:41,642 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 186 [2020-10-23 20:12:41,647 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:41,647 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:12:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:12:41,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:12:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:12:41,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:12:42,168 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:12:42,169 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:12:42,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:12:42,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:12:42 BoogieIcfgContainer [2020-10-23 20:12:42,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:12:42,229 INFO L168 Benchmark]: Toolchain (without parser) took 55765.62 ms. Allocated memory was 153.1 MB in the beginning and 814.7 MB in the end (delta: 661.7 MB). Free memory was 128.4 MB in the beginning and 500.8 MB in the end (delta: -372.4 MB). Peak memory consumption was 290.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:12:42,230 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:12:42,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.36 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 106.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:12:42,232 INFO L168 Benchmark]: Boogie Preprocessor took 97.82 ms. Allocated memory is still 153.1 MB. Free memory was 106.3 MB in the beginning and 102.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:12:42,233 INFO L168 Benchmark]: RCFGBuilder took 1821.27 ms. Allocated memory is still 153.1 MB. Free memory was 102.4 MB in the beginning and 95.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:12:42,234 INFO L168 Benchmark]: TraceAbstraction took 53186.47 ms. Allocated memory was 153.1 MB in the beginning and 814.7 MB in the end (delta: 661.7 MB). Free memory was 94.8 MB in the beginning and 500.8 MB in the end (delta: -406.0 MB). Peak memory consumption was 256.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:12:42,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 641.36 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 106.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.82 ms. Allocated memory is still 153.1 MB. Free memory was 106.3 MB in the beginning and 102.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1821.27 ms. Allocated memory is still 153.1 MB. Free memory was 102.4 MB in the beginning and 95.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 53186.47 ms. Allocated memory was 153.1 MB in the beginning and 814.7 MB in the end (delta: 661.7 MB). Free memory was 94.8 MB in the beginning and 500.8 MB in the end (delta: -406.0 MB). Peak memory consumption was 256.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L557] int pumpRunning = 0; [L558] int systemActive = 1; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L947] int retValue_acc ; [L950] retValue_acc = 1 [L951] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L855] int splverifierCounter ; [L856] int tmp ; [L857] int tmp___0 ; [L858] int tmp___1 ; [L859] int tmp___2 ; [L862] splverifierCounter = 0 [L864] COND TRUE 1 [L866] COND TRUE splverifierCounter < 4 [L872] tmp = __VERIFIER_nondet_int() [L874] COND TRUE \read(tmp) [L876] CALL waterRise() [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 [L876] RET waterRise() [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L896] CALL startSystem() [L755] systemActive = 1 [L896] RET startSystem() [L909] CALL timeShift() [L564] COND FALSE !(\read(pumpRunning)) [L571] COND TRUE \read(systemActive) [L573] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] CALL processEnvironment__wrappee__methaneQuery() [L593] int tmp ; [L596] COND TRUE ! pumpRunning [L598] CALL, EXPR isHighWaterLevel() [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L739] CALL, EXPR isHighWaterSensorDry() [L840] int retValue_acc ; [L843] COND FALSE !(waterLevel < 2) [L847] retValue_acc = 0 [L848] return (retValue_acc); [L739] RET, EXPR isHighWaterSensorDry() [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); [L598] RET, EXPR isHighWaterLevel() [L598] tmp = isHighWaterLevel() [L600] COND TRUE \read(tmp) [L602] CALL activatePump() [L652] int tmp ; [L656] CALL, EXPR isMethaneAlarm() [L677] int retValue_acc ; [L681] CALL, EXPR isMethaneLevelCritical() [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); [L656] RET, EXPR isMethaneAlarm() [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L662] CALL activatePump__wrappee__highWaterSensor() [L647] pumpRunning = 1 [L662] RET activatePump__wrappee__highWaterSensor() [L602] RET activatePump() [L637] RET processEnvironment__wrappee__methaneQuery() [L573] RET processEnvironment() [L579] CALL __utac_acc__Specification4_spec__1() [L150] int tmp ; [L151] int tmp___0 ; [L155] CALL, EXPR getWaterLevel() [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); [L155] RET, EXPR getWaterLevel() [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) [L579] RET __utac_acc__Specification4_spec__1() [L909] RET timeShift() [L864] COND TRUE 1 [L866] COND TRUE splverifierCounter < 4 [L872] tmp = __VERIFIER_nondet_int() [L874] COND TRUE \read(tmp) [L876] CALL waterRise() [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 [L876] RET waterRise() [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L896] CALL startSystem() [L755] systemActive = 1 [L896] RET startSystem() [L909] CALL timeShift() [L564] COND FALSE !(\read(pumpRunning)) [L571] COND TRUE \read(systemActive) [L573] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] CALL processEnvironment__wrappee__methaneQuery() [L593] int tmp ; [L596] COND TRUE ! pumpRunning [L598] CALL, EXPR isHighWaterLevel() [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L739] CALL, EXPR isHighWaterSensorDry() [L840] int retValue_acc ; [L843] COND TRUE waterLevel < 2 [L844] retValue_acc = 1 [L845] return (retValue_acc); [L739] RET, EXPR isHighWaterSensorDry() [L739] tmp = isHighWaterSensorDry() [L741] COND TRUE \read(tmp) [L742] tmp___0 = 0 [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); [L598] RET, EXPR isHighWaterLevel() [L598] tmp = isHighWaterLevel() [L600] COND FALSE !(\read(tmp)) [L606] FCALL processEnvironment__wrappee__base() [L637] RET processEnvironment__wrappee__methaneQuery() [L573] RET processEnvironment() [L579] CALL __utac_acc__Specification4_spec__1() [L150] int tmp ; [L151] int tmp___0 ; [L155] CALL, EXPR getWaterLevel() [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); [L155] RET, EXPR getWaterLevel() [L155] tmp = getWaterLevel() [L157] COND TRUE tmp == 0 [L159] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); [L159] RET, EXPR isPumpRunning() [L159] tmp___0 = isPumpRunning() [L161] COND TRUE \read(tmp___0) [L163] CALL __automaton_fail() [L545] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product46.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 644 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 33.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1790 SDtfs, 3834 SDslu, 4156 SDs, 0 SdLazy, 8503 SolverSat, 1246 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 350 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=831occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1072 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...