/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_spec1_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:48:07,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:48:07,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:48:07,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:48:07,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:48:07,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:48:07,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:48:07,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:48:07,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:48:07,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:48:07,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:48:07,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:48:07,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:48:07,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:48:07,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:48:07,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:48:07,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:48:07,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:48:07,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:48:07,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:48:07,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:48:07,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:48:07,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:48:07,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:48:07,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:48:07,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:48:07,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:48:07,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:48:07,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:48:07,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:48:07,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:48:07,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:48:07,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:48:07,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:48:07,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:48:07,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:48:07,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:48:07,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:48:07,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:48:07,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:48:07,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:48:07,633 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 19:48:07,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:48:07,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:48:07,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:48:07,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:48:07,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:48:07,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:48:07,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:48:07,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:48:07,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:48:07,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:48:07,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:48:07,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:48:07,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:48:07,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:48:07,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:48:07,666 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:48:07,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:48:07,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:48:07,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:48:07,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:48:07,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:48:07,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:48:07,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:48:08,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:48:08,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:48:08,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:48:08,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:48:08,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:48:08,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-10-23 19:48:08,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bccd98ef6/483c116a7bf9456fb4404ed79b74c10a/FLAG8ffd408fb [2020-10-23 19:48:08,962 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:48:08,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-10-23 19:48:08,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bccd98ef6/483c116a7bf9456fb4404ed79b74c10a/FLAG8ffd408fb [2020-10-23 19:48:09,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bccd98ef6/483c116a7bf9456fb4404ed79b74c10a [2020-10-23 19:48:09,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:48:09,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:48:09,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:09,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:48:09,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:48:09,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17946316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09, skipping insertion in model container [2020-10-23 19:48:09,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:48:09,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:48:09,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:09,646 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:48:09,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:09,822 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:48:09,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09 WrapperNode [2020-10-23 19:48:09,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:09,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:48:09,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:48:09,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:48:09,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (1/1) ... [2020-10-23 19:48:09,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:48:09,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:48:09,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:48:09,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:48:09,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (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 19:48:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:48:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:48:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:48:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:48:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:48:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:48:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:48:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:48:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:48:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:48:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:48:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:48:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:48:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:48:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:48:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:48:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:48:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:48:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:48:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:48:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:48:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:48:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:48:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:48:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:48:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:48:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:48:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:48:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:48:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:48:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:48:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:48:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:48:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:48:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:48:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:48:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:48:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:48:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:48:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:48:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:48:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:48:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:48:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:48:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:48:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:48:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:48:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:48:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:48:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:48:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:48:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:48:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:48:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:48:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:48:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:48:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:48:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:48:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:48:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:48:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:48:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:48:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:48:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:48:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:48:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:48:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:48:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:48:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:48:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:48:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:48:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:48:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:48:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:48:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:48:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:48:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:48:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:48:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:48:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:48:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:48:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:48:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:48:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:48:11,569 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:48:11,570 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:48:11,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:11 BoogieIcfgContainer [2020-10-23 19:48:11,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:48:11,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:48:11,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:48:11,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:48:11,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:48:09" (1/3) ... [2020-10-23 19:48:11,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a591b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:11, skipping insertion in model container [2020-10-23 19:48:11,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:09" (2/3) ... [2020-10-23 19:48:11,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a591b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:11, skipping insertion in model container [2020-10-23 19:48:11,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:11" (3/3) ... [2020-10-23 19:48:11,582 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product45.cil.c [2020-10-23 19:48:11,595 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:48:11,601 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:48:11,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:48:11,640 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:48:11,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:48:11,640 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:48:11,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:48:11,640 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:48:11,641 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:48:11,641 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:48:11,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:48:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-10-23 19:48:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:48:11,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:11,685 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 19:48:11,685 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 19:48:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1909918897, now seen corresponding path program 1 times [2020-10-23 19:48:11,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:11,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866385248] [2020-10-23 19:48:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:11,771 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,671 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:12,925 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 19:48:12,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866385248] [2020-10-23 19:48:12,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:12,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:48:12,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111141133] [2020-10-23 19:48:12,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:48:12,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:12,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:48:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:48:12,960 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2020-10-23 19:48:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:14,770 INFO L93 Difference]: Finished difference Result 497 states and 593 transitions. [2020-10-23 19:48:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:48:14,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:48:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:14,790 INFO L225 Difference]: With dead ends: 497 [2020-10-23 19:48:14,790 INFO L226 Difference]: Without dead ends: 308 [2020-10-23 19:48:14,796 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 19:48:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-23 19:48:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 265. [2020-10-23 19:48:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-23 19:48:14,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 289 transitions. [2020-10-23 19:48:14,956 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 289 transitions. Word has length 148 [2020-10-23 19:48:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:14,957 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 289 transitions. [2020-10-23 19:48:14,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:48:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 289 transitions. [2020-10-23 19:48:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:48:14,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:14,963 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 19:48:14,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:48:14,963 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 19:48:14,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:14,964 INFO L82 PathProgramCache]: Analyzing trace with hash 874846958, now seen corresponding path program 1 times [2020-10-23 19:48:14,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:14,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6433648] [2020-10-23 19:48:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:14,968 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,529 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:48:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:48:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:15,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6433648] [2020-10-23 19:48:15,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:15,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:48:15,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166861929] [2020-10-23 19:48:15,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:48:15,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:15,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:48:15,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:48:15,633 INFO L87 Difference]: Start difference. First operand 265 states and 289 transitions. Second operand 4 states. [2020-10-23 19:48:16,449 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:17,810 INFO L93 Difference]: Finished difference Result 411 states and 464 transitions. [2020-10-23 19:48:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:48:17,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:48:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:17,817 INFO L225 Difference]: With dead ends: 411 [2020-10-23 19:48:17,817 INFO L226 Difference]: Without dead ends: 291 [2020-10-23 19:48:17,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:48:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-23 19:48:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 255. [2020-10-23 19:48:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 19:48:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 276 transitions. [2020-10-23 19:48:17,919 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 276 transitions. Word has length 149 [2020-10-23 19:48:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:17,920 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 276 transitions. [2020-10-23 19:48:17,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:48:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 276 transitions. [2020-10-23 19:48:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 19:48:17,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:17,923 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] [2020-10-23 19:48:17,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:48:17,924 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 19:48:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1194108072, now seen corresponding path program 1 times [2020-10-23 19:48:17,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:17,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709816705] [2020-10-23 19:48:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:17,929 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,434 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:48:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:18,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709816705] [2020-10-23 19:48:18,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:18,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:18,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108004056] [2020-10-23 19:48:18,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:18,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:18,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:18,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:18,634 INFO L87 Difference]: Start difference. First operand 255 states and 276 transitions. Second operand 9 states. [2020-10-23 19:48:19,333 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:19,867 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:20,295 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:20,745 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:21,195 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:21,594 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:23,612 INFO L93 Difference]: Finished difference Result 431 states and 489 transitions. [2020-10-23 19:48:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:48:23,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 19:48:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:23,618 INFO L225 Difference]: With dead ends: 431 [2020-10-23 19:48:23,618 INFO L226 Difference]: Without dead ends: 291 [2020-10-23 19:48:23,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:48:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-23 19:48:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 255. [2020-10-23 19:48:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 19:48:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-10-23 19:48:23,726 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 158 [2020-10-23 19:48:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:23,727 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-10-23 19:48:23,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-10-23 19:48:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-23 19:48:23,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:23,729 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] [2020-10-23 19:48:23,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:48:23,730 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 19:48:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:23,730 INFO L82 PathProgramCache]: Analyzing trace with hash -122340451, now seen corresponding path program 1 times [2020-10-23 19:48:23,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:23,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807634986] [2020-10-23 19:48:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:23,734 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,178 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:24,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 19:48:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 19:48:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:24,402 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 19:48:24,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807634986] [2020-10-23 19:48:24,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:24,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:48:24,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323528603] [2020-10-23 19:48:24,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:48:24,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:48:24,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:48:24,406 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 6 states. [2020-10-23 19:48:25,204 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:27,053 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:28,106 INFO L93 Difference]: Finished difference Result 572 states and 654 transitions. [2020-10-23 19:48:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:48:28,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-23 19:48:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:28,111 INFO L225 Difference]: With dead ends: 572 [2020-10-23 19:48:28,112 INFO L226 Difference]: Without dead ends: 432 [2020-10-23 19:48:28,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:48:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-23 19:48:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 371. [2020-10-23 19:48:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-23 19:48:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 400 transitions. [2020-10-23 19:48:28,270 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 400 transitions. Word has length 171 [2020-10-23 19:48:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:28,271 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 400 transitions. [2020-10-23 19:48:28,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:48:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 400 transitions. [2020-10-23 19:48:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-23 19:48:28,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:28,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:28,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:48:28,275 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 19:48:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash -489632535, now seen corresponding path program 1 times [2020-10-23 19:48:28,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:28,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803159202] [2020-10-23 19:48:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:28,279 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,698 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 19:48:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:48:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:28,955 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 19:48:28,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803159202] [2020-10-23 19:48:28,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:28,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:28,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026825468] [2020-10-23 19:48:28,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:28,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:28,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:28,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:28,958 INFO L87 Difference]: Start difference. First operand 371 states and 400 transitions. Second operand 9 states. [2020-10-23 19:48:29,651 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:30,995 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:31,418 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:31,818 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:32,209 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:32,602 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:48:32,982 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:35,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:35,238 INFO L93 Difference]: Finished difference Result 900 states and 1048 transitions. [2020-10-23 19:48:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 19:48:35,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-23 19:48:35,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:35,246 INFO L225 Difference]: With dead ends: 900 [2020-10-23 19:48:35,246 INFO L226 Difference]: Without dead ends: 644 [2020-10-23 19:48:35,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:48:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-10-23 19:48:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 566. [2020-10-23 19:48:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-10-23 19:48:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 624 transitions. [2020-10-23 19:48:35,538 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 624 transitions. Word has length 195 [2020-10-23 19:48:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:35,538 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 624 transitions. [2020-10-23 19:48:35,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 624 transitions. [2020-10-23 19:48:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-23 19:48:35,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:35,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:35,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:48:35,543 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 19:48:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1150661446, now seen corresponding path program 1 times [2020-10-23 19:48:35,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:35,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711251295] [2020-10-23 19:48:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:35,546 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:35,946 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 19:48:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:48:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:36,194 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 19:48:36,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711251295] [2020-10-23 19:48:36,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:36,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:36,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049950697] [2020-10-23 19:48:36,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:36,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:36,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:36,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:36,199 INFO L87 Difference]: Start difference. First operand 566 states and 624 transitions. Second operand 9 states. [2020-10-23 19:48:36,867 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:38,510 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:38,965 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:39,439 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:39,860 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:40,698 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:41,137 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:41,523 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:41,982 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:43,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:43,470 INFO L93 Difference]: Finished difference Result 1521 states and 1774 transitions. [2020-10-23 19:48:43,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:48:43,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-23 19:48:43,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:43,478 INFO L225 Difference]: With dead ends: 1521 [2020-10-23 19:48:43,478 INFO L226 Difference]: Without dead ends: 1070 [2020-10-23 19:48:43,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:48:43,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2020-10-23 19:48:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 955. [2020-10-23 19:48:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-23 19:48:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1062 transitions. [2020-10-23 19:48:43,871 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1062 transitions. Word has length 195 [2020-10-23 19:48:43,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:43,872 INFO L481 AbstractCegarLoop]: Abstraction has 955 states and 1062 transitions. [2020-10-23 19:48:43,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:43,872 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1062 transitions. [2020-10-23 19:48:43,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 19:48:43,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:43,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:43,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:48:43,877 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 19:48:43,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:43,877 INFO L82 PathProgramCache]: Analyzing trace with hash 134318894, now seen corresponding path program 1 times [2020-10-23 19:48:43,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:43,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677976933] [2020-10-23 19:48:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:43,881 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,299 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:44,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:48:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:48:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:44,494 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 19:48:44,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677976933] [2020-10-23 19:48:44,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:44,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:44,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887524390] [2020-10-23 19:48:44,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:44,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:44,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:44,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:44,496 INFO L87 Difference]: Start difference. First operand 955 states and 1062 transitions. Second operand 10 states. [2020-10-23 19:48:45,143 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:47,135 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:47,570 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:48,034 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:49,552 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:49,961 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:50,366 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:50,793 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:51,170 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:51,619 INFO L93 Difference]: Finished difference Result 1179 states and 1379 transitions. [2020-10-23 19:48:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:48:51,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-10-23 19:48:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:51,629 INFO L225 Difference]: With dead ends: 1179 [2020-10-23 19:48:51,629 INFO L226 Difference]: Without dead ends: 1175 [2020-10-23 19:48:51,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:48:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-10-23 19:48:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 955. [2020-10-23 19:48:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-23 19:48:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1060 transitions. [2020-10-23 19:48:52,064 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1060 transitions. Word has length 200 [2020-10-23 19:48:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:52,065 INFO L481 AbstractCegarLoop]: Abstraction has 955 states and 1060 transitions. [2020-10-23 19:48:52,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:48:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1060 transitions. [2020-10-23 19:48:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-23 19:48:52,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:52,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:52,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:48:52,070 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 19:48:52,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:52,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1355363125, now seen corresponding path program 1 times [2020-10-23 19:48:52,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:52,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714050234] [2020-10-23 19:48:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:52,075 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,421 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:48:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 19:48:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 19:48:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:52,646 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 19:48:52,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714050234] [2020-10-23 19:48:52,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:52,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:52,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639293436] [2020-10-23 19:48:52,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:52,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:52,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:52,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:52,649 INFO L87 Difference]: Start difference. First operand 955 states and 1060 transitions. Second operand 10 states. [2020-10-23 19:48:54,144 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:54,566 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:55,017 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:48:55,413 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:55,815 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:56,188 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:57,953 INFO L93 Difference]: Finished difference Result 2045 states and 2403 transitions. [2020-10-23 19:48:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:48:57,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 223 [2020-10-23 19:48:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:57,962 INFO L225 Difference]: With dead ends: 2045 [2020-10-23 19:48:57,962 INFO L226 Difference]: Without dead ends: 1205 [2020-10-23 19:48:57,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:48:57,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2020-10-23 19:48:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 987. [2020-10-23 19:48:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2020-10-23 19:48:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1092 transitions. [2020-10-23 19:48:58,326 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1092 transitions. Word has length 223 [2020-10-23 19:48:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:58,327 INFO L481 AbstractCegarLoop]: Abstraction has 987 states and 1092 transitions. [2020-10-23 19:48:58,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:48:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1092 transitions. [2020-10-23 19:48:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-23 19:48:58,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:58,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:58,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:48:58,333 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:58,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:58,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2023109525, now seen corresponding path program 1 times [2020-10-23 19:48:58,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:58,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255033889] [2020-10-23 19:48:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:58,337 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,722 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:58,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:48:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:48:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 19:48:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 19:48:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,992 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 19:48:58,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255033889] [2020-10-23 19:48:58,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:58,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:48:58,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665525778] [2020-10-23 19:48:58,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:48:58,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:58,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:48:58,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:48:58,994 INFO L87 Difference]: Start difference. First operand 987 states and 1092 transitions. Second operand 13 states. [2020-10-23 19:48:59,774 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:00,171 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:00,559 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:00,970 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:01,397 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:02,471 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:02,852 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:03,232 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:03,635 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:04,007 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:05,911 INFO L93 Difference]: Finished difference Result 1811 states and 2089 transitions. [2020-10-23 19:49:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:49:05,911 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 223 [2020-10-23 19:49:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:05,919 INFO L225 Difference]: With dead ends: 1811 [2020-10-23 19:49:05,919 INFO L226 Difference]: Without dead ends: 939 [2020-10-23 19:49:05,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:49:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-10-23 19:49:06,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 795. [2020-10-23 19:49:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-23 19:49:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 858 transitions. [2020-10-23 19:49:06,208 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 858 transitions. Word has length 223 [2020-10-23 19:49:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:06,209 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 858 transitions. [2020-10-23 19:49:06,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:49:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 858 transitions. [2020-10-23 19:49:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-23 19:49:06,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:06,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:06,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:49:06,214 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:06,214 INFO L82 PathProgramCache]: Analyzing trace with hash -431148714, now seen corresponding path program 1 times [2020-10-23 19:49:06,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:06,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999854423] [2020-10-23 19:49:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:06,218 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,605 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:06,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 19:49:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:49:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:49:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:49:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:49:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 19:49:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:07,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 19:49:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:07,174 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 19:49:07,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999854423] [2020-10-23 19:49:07,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:07,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 19:49:07,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671183686] [2020-10-23 19:49:07,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 19:49:07,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:07,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 19:49:07,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-23 19:49:07,177 INFO L87 Difference]: Start difference. First operand 795 states and 858 transitions. Second operand 20 states. [2020-10-23 19:49:07,915 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:08,466 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:08,885 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:49:09,308 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:09,713 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:10,109 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:11,252 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:12,953 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:13,412 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:13,881 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:14,362 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:14,802 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:15,255 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:15,659 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:16,103 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:16,544 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:17,087 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:17,546 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:18,002 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:49:18,912 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:49:19,963 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 208 [2020-10-23 19:49:20,790 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2020-10-23 19:49:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:23,660 INFO L93 Difference]: Finished difference Result 1588 states and 1781 transitions. [2020-10-23 19:49:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-23 19:49:23,660 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 228 [2020-10-23 19:49:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:23,667 INFO L225 Difference]: With dead ends: 1588 [2020-10-23 19:49:23,668 INFO L226 Difference]: Without dead ends: 908 [2020-10-23 19:49:23,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=530, Invalid=2332, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 19:49:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-23 19:49:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 758. [2020-10-23 19:49:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-23 19:49:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 811 transitions. [2020-10-23 19:49:23,968 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 811 transitions. Word has length 228 [2020-10-23 19:49:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:23,968 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 811 transitions. [2020-10-23 19:49:23,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 19:49:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 811 transitions. [2020-10-23 19:49:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-23 19:49:23,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:23,973 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:23,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:49:23,974 INFO L429 AbstractCegarLoop]: === Iteration 11 === [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 19:49:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:23,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1826151032, now seen corresponding path program 1 times [2020-10-23 19:49:23,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:23,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174634352] [2020-10-23 19:49:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:24,003 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:49:24,008 INFO L168 Benchmark]: Toolchain (without parser) took 74788.68 ms. Allocated memory was 151.0 MB in the beginning and 791.7 MB in the end (delta: 640.7 MB). Free memory was 126.7 MB in the beginning and 304.6 MB in the end (delta: -177.8 MB). Peak memory consumption was 463.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:24,009 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 119.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:49:24,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 105.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:24,010 INFO L168 Benchmark]: Boogie Preprocessor took 148.76 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 133.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:24,011 INFO L168 Benchmark]: RCFGBuilder took 1598.91 ms. Allocated memory is still 151.0 MB. Free memory was 133.0 MB in the beginning and 88.9 MB in the end (delta: 44.2 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:24,012 INFO L168 Benchmark]: TraceAbstraction took 72432.30 ms. Allocated memory was 151.0 MB in the beginning and 791.7 MB in the end (delta: 640.7 MB). Free memory was 88.3 MB in the beginning and 304.6 MB in the end (delta: -216.3 MB). Peak memory consumption was 423.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:24,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 119.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 597.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 105.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 148.76 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 133.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1598.91 ms. Allocated memory is still 151.0 MB. Free memory was 133.0 MB in the beginning and 88.9 MB in the end (delta: 44.2 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 72432.30 ms. Allocated memory was 151.0 MB in the beginning and 791.7 MB in the end (delta: 640.7 MB). Free memory was 88.3 MB in the beginning and 304.6 MB in the end (delta: -216.3 MB). Peak memory consumption was 423.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...