/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_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:44:38,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:44:38,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:44:38,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:44:38,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:44:38,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:44:38,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:44:38,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:44:38,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:44:38,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:44:38,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:44:38,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:44:38,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:44:38,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:44:38,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:44:38,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:44:38,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:44:38,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:44:38,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:44:38,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:44:38,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:44:38,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:44:38,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:44:38,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:44:38,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:44:38,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:44:38,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:44:38,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:44:38,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:44:38,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:44:38,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:44:38,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:44:38,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:44:38,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:44:38,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:44:38,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:44:38,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:44:38,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:44:38,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:44:38,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:44:38,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:44:38,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:44:38,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:44:38,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:44:38,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:44:38,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:44:38,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:44:38,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:44:38,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:44:38,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:44:38,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:44:38,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:44:38,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:44:38,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:44:38,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:44:38,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:44:38,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:44:38,839 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:44:38,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:44:38,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:44:38,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:44:38,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:44:38,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:44:38,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:44:38,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:44:39,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:44:39,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:44:39,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:44:39,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:44:39,274 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:44:39,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-11-06 23:44:39,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46dfe89e2/3b42365ddaf14ace9f62531fda7c13ed/FLAGc91842099 [2020-11-06 23:44:40,071 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:44:40,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-11-06 23:44:40,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46dfe89e2/3b42365ddaf14ace9f62531fda7c13ed/FLAGc91842099 [2020-11-06 23:44:40,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46dfe89e2/3b42365ddaf14ace9f62531fda7c13ed [2020-11-06 23:44:40,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:44:40,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:44:40,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:40,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:44:40,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:44:40,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:40,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18573c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40, skipping insertion in model container [2020-11-06 23:44:40,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:40,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:44:40,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:44:40,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:40,792 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:44:40,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:40,928 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:44:40,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40 WrapperNode [2020-11-06 23:44:40,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:40,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:44:40,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:44:40,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:44:40,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:40,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:40,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:40,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:40,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:40,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:41,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (1/1) ... [2020-11-06 23:44:41,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:44:41,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:44:41,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:44:41,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:44:41,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (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 [2020-11-06 23:44:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:44:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:44:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:44:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:44:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:44:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:44:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:44:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:44:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:44:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:44:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:44:41,096 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:44:41,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:44:41,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:44:41,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:44:41,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:44:41,098 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:44:41,098 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:44:41,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:44:41,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:44:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:44:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:44:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:44:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:44:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:44:41,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:44:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:44:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:44:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:44:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:44:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:44:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:44:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:44:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:44:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:44:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:44:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:44:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:44:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:44:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:44:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:44:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:44:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:44:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:44:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:44:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:44:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:44:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:44:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:44:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:44:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:44:41,109 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:44:41,109 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:44:41,109 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:44:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:44:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:44:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:44:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:44:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:44:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:44:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:44:42,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:44:42,228 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:44:42,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:42 BoogieIcfgContainer [2020-11-06 23:44:42,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:44:42,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:44:42,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:44:42,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:44:42,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:44:40" (1/3) ... [2020-11-06 23:44:42,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfb4b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:42, skipping insertion in model container [2020-11-06 23:44:42,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:40" (2/3) ... [2020-11-06 23:44:42,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfb4b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:42, skipping insertion in model container [2020-11-06 23:44:42,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:42" (3/3) ... [2020-11-06 23:44:42,240 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-11-06 23:44:42,256 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:44:42,261 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:44:42,273 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:44:42,296 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:44:42,296 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:44:42,296 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:44:42,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:44:42,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:44:42,297 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:44:42,297 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:44:42,297 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:44:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2020-11-06 23:44:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:44:42,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:42,341 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] [2020-11-06 23:44:42,342 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]=== [2020-11-06 23:44:42,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:42,349 INFO L82 PathProgramCache]: Analyzing trace with hash 818889816, now seen corresponding path program 1 times [2020-11-06 23:44:42,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:42,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202964780] [2020-11-06 23:44:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:42,449 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,271 WARN L194 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:44:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:44:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:43,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202964780] [2020-11-06 23:44:43,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:43,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:44:43,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159256235] [2020-11-06 23:44:43,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:44:43,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:43,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:44:43,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:44:43,516 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2020-11-06 23:44:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:44,974 INFO L93 Difference]: Finished difference Result 429 states and 512 transitions. [2020-11-06 23:44:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:44:44,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:44:44,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:44,992 INFO L225 Difference]: With dead ends: 429 [2020-11-06 23:44:44,992 INFO L226 Difference]: Without dead ends: 272 [2020-11-06 23:44:44,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:44:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-06 23:44:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 233. [2020-11-06 23:44:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-11-06 23:44:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2020-11-06 23:44:45,177 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 148 [2020-11-06 23:44:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:45,179 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2020-11-06 23:44:45,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:44:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2020-11-06 23:44:45,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:44:45,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:45,184 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] [2020-11-06 23:44:45,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:44:45,185 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]=== [2020-11-06 23:44:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1991934585, now seen corresponding path program 1 times [2020-11-06 23:44:45,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:45,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227216192] [2020-11-06 23:44:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:45,191 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,650 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:45,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:44:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:44:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:45,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227216192] [2020-11-06 23:44:45,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:45,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:44:45,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441645078] [2020-11-06 23:44:45,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:44:45,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:44:45,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:44:45,751 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand 4 states. [2020-11-06 23:44:46,549 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:44:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:47,421 INFO L93 Difference]: Finished difference Result 343 states and 383 transitions. [2020-11-06 23:44:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:44:47,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:44:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:47,426 INFO L225 Difference]: With dead ends: 343 [2020-11-06 23:44:47,426 INFO L226 Difference]: Without dead ends: 255 [2020-11-06 23:44:47,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:44:47,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-06 23:44:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 223. [2020-11-06 23:44:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-11-06 23:44:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2020-11-06 23:44:47,579 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 149 [2020-11-06 23:44:47,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:47,582 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2020-11-06 23:44:47,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:44:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2020-11-06 23:44:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-06 23:44:47,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:47,592 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] [2020-11-06 23:44:47,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:44:47,592 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]=== [2020-11-06 23:44:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1134896611, now seen corresponding path program 1 times [2020-11-06 23:44:47,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:47,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810728185] [2020-11-06 23:44:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:47,599 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,137 WARN L194 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:44:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-06 23:44:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:48,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810728185] [2020-11-06 23:44:48,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:48,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:44:48,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743200826] [2020-11-06 23:44:48,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:44:48,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:48,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:44:48,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:44:48,291 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand 9 states. [2020-11-06 23:44:48,918 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:44:49,381 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:44:49,755 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:44:50,159 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:44:50,536 WARN L194 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:44:50,901 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:44:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:52,383 INFO L93 Difference]: Finished difference Result 363 states and 408 transitions. [2020-11-06 23:44:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 23:44:52,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-11-06 23:44:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:52,386 INFO L225 Difference]: With dead ends: 363 [2020-11-06 23:44:52,387 INFO L226 Difference]: Without dead ends: 255 [2020-11-06 23:44:52,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-06 23:44:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-06 23:44:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 223. [2020-11-06 23:44:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-11-06 23:44:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 237 transitions. [2020-11-06 23:44:52,476 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 237 transitions. Word has length 158 [2020-11-06 23:44:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:52,477 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 237 transitions. [2020-11-06 23:44:52,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:44:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 237 transitions. [2020-11-06 23:44:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-06 23:44:52,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:52,480 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] [2020-11-06 23:44:52,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:44:52,480 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]=== [2020-11-06 23:44:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1411314036, now seen corresponding path program 1 times [2020-11-06 23:44:52,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:52,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091685303] [2020-11-06 23:44:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:52,485 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,956 WARN L194 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:44:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:44:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-11-06 23:44:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-06 23:44:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:53,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091685303] [2020-11-06 23:44:53,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:53,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 23:44:53,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985879889] [2020-11-06 23:44:53,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 23:44:53,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 23:44:53,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-06 23:44:53,124 INFO L87 Difference]: Start difference. First operand 223 states and 237 transitions. Second operand 6 states. [2020-11-06 23:44:53,732 WARN L194 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:44:55,428 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:44:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:56,019 INFO L93 Difference]: Finished difference Result 487 states and 553 transitions. [2020-11-06 23:44:56,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 23:44:56,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-11-06 23:44:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:56,024 INFO L225 Difference]: With dead ends: 487 [2020-11-06 23:44:56,024 INFO L226 Difference]: Without dead ends: 379 [2020-11-06 23:44:56,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:44:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-11-06 23:44:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 318. [2020-11-06 23:44:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-11-06 23:44:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 342 transitions. [2020-11-06 23:44:56,177 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 342 transitions. Word has length 166 [2020-11-06 23:44:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:56,178 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 342 transitions. [2020-11-06 23:44:56,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 23:44:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 342 transitions. [2020-11-06 23:44:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-06 23:44:56,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:56,181 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] [2020-11-06 23:44:56,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:44:56,182 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]=== [2020-11-06 23:44:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:56,182 INFO L82 PathProgramCache]: Analyzing trace with hash 996135363, now seen corresponding path program 1 times [2020-11-06 23:44:56,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:56,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080061397] [2020-11-06 23:44:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:56,186 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,574 WARN L194 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:44:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:44:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:44:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:44:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-06 23:44:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:44:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:56,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080061397] [2020-11-06 23:44:56,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:56,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:44:56,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128362387] [2020-11-06 23:44:56,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:44:56,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:56,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:44:56,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:44:56,787 INFO L87 Difference]: Start difference. First operand 318 states and 342 transitions. Second operand 9 states. [2020-11-06 23:44:57,390 WARN L194 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:44:58,590 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:44:58,986 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:44:59,387 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:44:59,770 WARN L194 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:00,199 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:00,576 WARN L194 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:02,217 INFO L93 Difference]: Finished difference Result 768 states and 897 transitions. [2020-11-06 23:45:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 23:45:02,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-11-06 23:45:02,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:02,223 INFO L225 Difference]: With dead ends: 768 [2020-11-06 23:45:02,223 INFO L226 Difference]: Without dead ends: 565 [2020-11-06 23:45:02,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:45:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-11-06 23:45:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 487. [2020-11-06 23:45:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-11-06 23:45:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 536 transitions. [2020-11-06 23:45:02,473 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 536 transitions. Word has length 190 [2020-11-06 23:45:02,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:02,474 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 536 transitions. [2020-11-06 23:45:02,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:45:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 536 transitions. [2020-11-06 23:45:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-06 23:45:02,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:02,478 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] [2020-11-06 23:45:02,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:45:02,478 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]=== [2020-11-06 23:45:02,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:02,479 INFO L82 PathProgramCache]: Analyzing trace with hash 787786592, now seen corresponding path program 1 times [2020-11-06 23:45:02,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:02,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245870999] [2020-11-06 23:45:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:02,483 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:02,907 WARN L194 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:45:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-06 23:45:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:03,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:45:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:03,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245870999] [2020-11-06 23:45:03,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:03,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:45:03,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944783347] [2020-11-06 23:45:03,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:45:03,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:03,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:45:03,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:45:03,094 INFO L87 Difference]: Start difference. First operand 487 states and 536 transitions. Second operand 9 states. [2020-11-06 23:45:03,724 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:05,432 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:05,811 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:06,220 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:06,586 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:06,956 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:07,350 WARN L194 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:07,737 WARN L194 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:08,224 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:09,338 INFO L93 Difference]: Finished difference Result 1284 states and 1506 transitions. [2020-11-06 23:45:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:45:09,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-11-06 23:45:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:09,345 INFO L225 Difference]: With dead ends: 1284 [2020-11-06 23:45:09,345 INFO L226 Difference]: Without dead ends: 912 [2020-11-06 23:45:09,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:45:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-11-06 23:45:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 797. [2020-11-06 23:45:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-11-06 23:45:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 886 transitions. [2020-11-06 23:45:09,695 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 886 transitions. Word has length 190 [2020-11-06 23:45:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:09,696 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 886 transitions. [2020-11-06 23:45:09,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:45:09,696 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 886 transitions. [2020-11-06 23:45:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-06 23:45:09,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:09,700 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] [2020-11-06 23:45:09,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:45:09,700 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]=== [2020-11-06 23:45:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:09,701 INFO L82 PathProgramCache]: Analyzing trace with hash 222601279, now seen corresponding path program 1 times [2020-11-06 23:45:09,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:09,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577087422] [2020-11-06 23:45:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:09,705 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,102 WARN L194 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:10,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:45:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-11-06 23:45:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:45:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:10,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577087422] [2020-11-06 23:45:10,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:10,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:10,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725056375] [2020-11-06 23:45:10,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:10,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:10,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:10,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:10,323 INFO L87 Difference]: Start difference. First operand 797 states and 886 transitions. Second operand 10 states. [2020-11-06 23:45:10,980 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:12,750 WARN L194 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:13,218 WARN L194 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:13,575 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:13,953 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:14,341 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:14,766 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:15,140 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:15,516 WARN L194 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:16,629 INFO L93 Difference]: Finished difference Result 1021 states and 1200 transitions. [2020-11-06 23:45:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:45:16,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-11-06 23:45:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:16,637 INFO L225 Difference]: With dead ends: 1021 [2020-11-06 23:45:16,638 INFO L226 Difference]: Without dead ends: 1017 [2020-11-06 23:45:16,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:45:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-11-06 23:45:16,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 797. [2020-11-06 23:45:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-11-06 23:45:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 884 transitions. [2020-11-06 23:45:16,991 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 884 transitions. Word has length 195 [2020-11-06 23:45:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:16,992 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 884 transitions. [2020-11-06 23:45:16,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 884 transitions. [2020-11-06 23:45:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-06 23:45:16,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:16,996 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] [2020-11-06 23:45:16,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:45:16,996 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]=== [2020-11-06 23:45:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:16,997 INFO L82 PathProgramCache]: Analyzing trace with hash -347744547, now seen corresponding path program 1 times [2020-11-06 23:45:16,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:16,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306065291] [2020-11-06 23:45:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:17,000 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,367 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:45:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-06 23:45:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:45:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:17,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306065291] [2020-11-06 23:45:17,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:17,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:17,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602967368] [2020-11-06 23:45:17,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:17,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:17,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:17,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:17,553 INFO L87 Difference]: Start difference. First operand 797 states and 884 transitions. Second operand 10 states. [2020-11-06 23:45:18,940 WARN L194 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:19,327 WARN L194 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:19,727 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:45:20,121 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:20,512 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:20,871 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:22,261 INFO L93 Difference]: Finished difference Result 1721 states and 2011 transitions. [2020-11-06 23:45:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:45:22,266 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2020-11-06 23:45:22,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:22,273 INFO L225 Difference]: With dead ends: 1721 [2020-11-06 23:45:22,273 INFO L226 Difference]: Without dead ends: 1039 [2020-11-06 23:45:22,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:45:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-11-06 23:45:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 829. [2020-11-06 23:45:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-11-06 23:45:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 916 transitions. [2020-11-06 23:45:22,586 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 916 transitions. Word has length 196 [2020-11-06 23:45:22,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:22,586 INFO L481 AbstractCegarLoop]: Abstraction has 829 states and 916 transitions. [2020-11-06 23:45:22,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 916 transitions. [2020-11-06 23:45:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-06 23:45:22,590 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:22,590 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] [2020-11-06 23:45:22,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:45:22,591 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]=== [2020-11-06 23:45:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:22,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1487538371, now seen corresponding path program 1 times [2020-11-06 23:45:22,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:22,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340407770] [2020-11-06 23:45:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:22,594 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:22,944 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:22,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:45:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-06 23:45:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:45:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:23,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340407770] [2020-11-06 23:45:23,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:23,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-06 23:45:23,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419714705] [2020-11-06 23:45:23,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 23:45:23,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:23,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 23:45:23,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-06 23:45:23,213 INFO L87 Difference]: Start difference. First operand 829 states and 916 transitions. Second operand 13 states. [2020-11-06 23:45:23,989 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:24,377 WARN L194 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:24,758 WARN L194 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:25,150 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:25,508 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:26,466 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:26,838 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:27,229 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:27,626 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:27,993 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:29,486 INFO L93 Difference]: Finished difference Result 1537 states and 1776 transitions. [2020-11-06 23:45:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:45:29,487 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 196 [2020-11-06 23:45:29,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:29,496 INFO L225 Difference]: With dead ends: 1537 [2020-11-06 23:45:29,497 INFO L226 Difference]: Without dead ends: 823 [2020-11-06 23:45:29,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-11-06 23:45:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-11-06 23:45:29,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 679. [2020-11-06 23:45:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-11-06 23:45:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 732 transitions. [2020-11-06 23:45:29,764 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 732 transitions. Word has length 196 [2020-11-06 23:45:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:29,765 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 732 transitions. [2020-11-06 23:45:29,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 23:45:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 732 transitions. [2020-11-06 23:45:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-06 23:45:29,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:29,767 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, 1] [2020-11-06 23:45:29,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:45:29,768 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]=== [2020-11-06 23:45:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash 25197201, now seen corresponding path program 1 times [2020-11-06 23:45:29,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:29,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850629606] [2020-11-06 23:45:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:29,771 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:29,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:29,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:30,110 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:45:30,110 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:45:30,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:45:30,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:45:30 BoogieIcfgContainer [2020-11-06 23:45:30,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:45:30,153 INFO L168 Benchmark]: Toolchain (without parser) took 49776.45 ms. Allocated memory was 153.1 MB in the beginning and 684.7 MB in the end (delta: 531.6 MB). Free memory was 128.8 MB in the beginning and 288.3 MB in the end (delta: -159.5 MB). Peak memory consumption was 373.7 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:30,154 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 96.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:45:30,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.04 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 107.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:30,158 INFO L168 Benchmark]: Boogie Preprocessor took 80.61 ms. Allocated memory is still 153.1 MB. Free memory was 107.7 MB in the beginning and 103.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:30,158 INFO L168 Benchmark]: RCFGBuilder took 1220.47 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 103.8 MB in the beginning and 163.0 MB in the end (delta: -59.1 MB). Peak memory consumption was 57.6 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:30,159 INFO L168 Benchmark]: TraceAbstraction took 47911.73 ms. Allocated memory was 185.6 MB in the beginning and 684.7 MB in the end (delta: 499.1 MB). Free memory was 162.4 MB in the beginning and 288.3 MB in the end (delta: -125.9 MB). Peak memory consumption was 373.8 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:30,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 96.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 547.04 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 107.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.61 ms. Allocated memory is still 153.1 MB. Free memory was 107.7 MB in the beginning and 103.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1220.47 ms. Allocated memory was 153.1 MB in the beginning and 185.6 MB in the end (delta: 32.5 MB). Free memory was 103.8 MB in the beginning and 163.0 MB in the end (delta: -59.1 MB). Peak memory consumption was 57.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 47911.73 ms. Allocated memory was 185.6 MB in the beginning and 684.7 MB in the end (delta: 499.1 MB). Free memory was 162.4 MB in the beginning and 288.3 MB in the end (delta: -125.9 MB). Peak memory consumption was 373.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L685] int cleanupTimeShifts = 4; [L808] int waterLevel = 1; [L809] int methaneLevelCritical = 0; [L758] int retValue_acc ; [L759] int tmp ; [L763] FCALL select_helpers() [L764] FCALL select_features() [L765] CALL, EXPR valid_product() [L676] int retValue_acc ; [L679] retValue_acc = 1 [L680] return (retValue_acc); [L765] RET, EXPR valid_product() [L765] tmp = valid_product() [L767] COND TRUE \read(tmp) [L769] FCALL setup() [L770] CALL runTest() [L752] CALL test() [L583] int splverifierCounter ; [L584] int tmp ; [L585] int tmp___0 ; [L586] int tmp___1 ; [L587] int tmp___2 ; [L590] splverifierCounter = 0 [L592] COND TRUE 1 [L594] COND TRUE splverifierCounter < 4 [L600] tmp = __VERIFIER_nondet_int() [L602] COND TRUE \read(tmp) [L604] CALL waterRise() [L826] COND TRUE waterLevel < 2 [L827] waterLevel = waterLevel + 1 [L604] RET waterRise() [L610] tmp___0 = __VERIFIER_nondet_int() [L612] COND TRUE \read(tmp___0) [L614] CALL changeMethaneLevel() [L838] COND FALSE !(\read(methaneLevelCritical)) [L841] methaneLevelCritical = 1 [L614] RET changeMethaneLevel() [L620] tmp___2 = __VERIFIER_nondet_int() [L622] COND TRUE \read(tmp___2) [L635] CALL timeShift() [L434] COND FALSE !(\read(pumpRunning)) [L441] COND TRUE \read(systemActive) [L443] CALL processEnvironment() [L463] int tmp ; [L466] COND TRUE ! pumpRunning [L468] CALL, EXPR isHighWaterLevel() [L560] int retValue_acc ; [L561] int tmp ; [L562] int tmp___0 ; [L566] CALL, EXPR isHighWaterSensorDry() [L888] int retValue_acc ; [L891] COND FALSE !(waterLevel < 2) [L895] retValue_acc = 0 [L896] return (retValue_acc); [L566] RET, EXPR isHighWaterSensorDry() [L566] tmp = isHighWaterSensorDry() [L568] COND FALSE !(\read(tmp)) [L571] tmp___0 = 1 [L573] retValue_acc = tmp___0 [L574] return (retValue_acc); [L468] RET, EXPR isHighWaterLevel() [L468] tmp = isHighWaterLevel() [L470] COND TRUE \read(tmp) [L472] CALL activatePump() [L491] pumpRunning = 1 [L472] RET activatePump() [L443] RET processEnvironment() [L449] CALL __utac_acc__Specification1_spec__1() [L782] int tmp ; [L783] int tmp___0 ; [L787] CALL, EXPR isMethaneLevelCritical() [L847] int retValue_acc ; [L850] retValue_acc = methaneLevelCritical [L851] return (retValue_acc); [L787] RET, EXPR isMethaneLevelCritical() [L787] tmp = isMethaneLevelCritical() [L789] COND TRUE \read(tmp) [L791] CALL, EXPR isPumpRunning() [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); [L791] RET, EXPR isPumpRunning() [L791] tmp___0 = isPumpRunning() [L793] COND TRUE \read(tmp___0) [L795] CALL __automaton_fail() [L412] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product33.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 619 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1930 SDtfs, 2954 SDslu, 4249 SDs, 0 SdLazy, 7038 SolverSat, 768 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=829occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 931 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...