/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:22:20,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:22:20,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:22:20,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:22:20,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:22:20,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:22:20,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:22:20,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:22:20,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:22:20,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:22:20,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:22:20,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:22:20,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:22:20,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:22:20,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:22:20,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:22:20,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:22:20,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:22:20,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:22:20,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:22:20,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:22:20,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:22:20,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:22:20,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:22:20,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:22:20,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:22:20,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:22:20,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:22:20,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:22:20,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:22:20,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:22:20,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:22:20,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:22:20,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:22:20,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:22:20,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:22:20,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:22:20,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:22:20,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:22:20,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:22:20,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:22:20,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:22:20,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:22:20,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:22:20,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:22:20,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:22:20,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:22:20,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:22:20,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:22:20,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:22:20,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:22:20,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:22:20,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:22:20,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:22:20,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:22:20,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:22:20,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:22:20,973 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:22:20,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:22:20,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:22:20,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:22:20,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:22:20,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:22:20,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:22:20,974 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:22:21,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:22:21,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:22:21,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:22:21,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:22:21,428 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:22:21,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-10-23 20:22:21,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8829b0511/cd432402251d4b60a41f03a33a6938db/FLAGbe343b898 [2020-10-23 20:22:22,237 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:22:22,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-10-23 20:22:22,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8829b0511/cd432402251d4b60a41f03a33a6938db/FLAGbe343b898 [2020-10-23 20:22:22,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8829b0511/cd432402251d4b60a41f03a33a6938db [2020-10-23 20:22:22,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:22:22,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:22:22,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:22:22,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:22:22,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:22:22,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:22" (1/1) ... [2020-10-23 20:22:22,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f82c4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:22, skipping insertion in model container [2020-10-23 20:22:22,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:22" (1/1) ... [2020-10-23 20:22:22,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:22:22,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:22:22,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:22:22,886 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:22:22,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:22:23,045 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:22:23,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23 WrapperNode [2020-10-23 20:22:23,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:22:23,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:22:23,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:22:23,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:22:23,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... [2020-10-23 20:22:23,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... [2020-10-23 20:22:23,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... [2020-10-23 20:22:23,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... [2020-10-23 20:22:23,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... [2020-10-23 20:22:23,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... [2020-10-23 20:22:23,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... [2020-10-23 20:22:23,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:22:23,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:22:23,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:22:23,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:22:23,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:22:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:22:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:22:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:22:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:22:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:22:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:22:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:22:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:22:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:22:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:22:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:22:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:22:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:22:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:22:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:22:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:22:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:22:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:22:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:22:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:22:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:22:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:22:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:22:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:22:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:22:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:22:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:22:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:22:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:22:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:22:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:22:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:22:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:22:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:22:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:22:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:22:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:22:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:22:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:22:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:22:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:22:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:22:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:22:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:22:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:22:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:22:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:22:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:22:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:22:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:22:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:22:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:22:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:22:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:22:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:22:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:22:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:22:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:22:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:22:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:22:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:22:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:22:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:22:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:22:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:22:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:22:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:22:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:22:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:22:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:22:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:22:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:22:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:22:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:22:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:22:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:22:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:22:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:22:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:22:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:22:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:22:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:22:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:22:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:22:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:22:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:22:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:22:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:22:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:22:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:22:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:22:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:22:24,574 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:22:24,574 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:22:24,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:24 BoogieIcfgContainer [2020-10-23 20:22:24,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:22:24,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:22:24,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:22:24,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:22:24,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:22:22" (1/3) ... [2020-10-23 20:22:24,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1349a309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:24, skipping insertion in model container [2020-10-23 20:22:24,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:23" (2/3) ... [2020-10-23 20:22:24,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1349a309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:24, skipping insertion in model container [2020-10-23 20:22:24,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:24" (3/3) ... [2020-10-23 20:22:24,587 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-10-23 20:22:24,599 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:22:24,606 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:22:24,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:22:24,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:22:24,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:22:24,647 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:22:24,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:22:24,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:22:24,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:22:24,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:22:24,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:22:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states. [2020-10-23 20:22:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:22:24,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:24,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:24,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash 455317414, now seen corresponding path program 1 times [2020-10-23 20:22:24,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:24,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017412932] [2020-10-23 20:22:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:24,812 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,559 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:25,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:22:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:22:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:22:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:22:25,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017412932] [2020-10-23 20:22:25,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:25,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:22:25,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594298542] [2020-10-23 20:22:25,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:22:25,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:22:25,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:22:25,784 INFO L87 Difference]: Start difference. First operand 366 states. Second operand 4 states. [2020-10-23 20:22:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:27,703 INFO L93 Difference]: Finished difference Result 588 states and 685 transitions. [2020-10-23 20:22:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:22:27,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:22:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:27,724 INFO L225 Difference]: With dead ends: 588 [2020-10-23 20:22:27,724 INFO L226 Difference]: Without dead ends: 363 [2020-10-23 20:22:27,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:22:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-23 20:22:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 312. [2020-10-23 20:22:27,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-23 20:22:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 339 transitions. [2020-10-23 20:22:27,971 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 339 transitions. Word has length 166 [2020-10-23 20:22:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:27,972 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 339 transitions. [2020-10-23 20:22:27,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:22:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 339 transitions. [2020-10-23 20:22:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:22:27,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:27,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:27,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:22:27,978 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash 400671932, now seen corresponding path program 1 times [2020-10-23 20:22:27,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:27,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749470043] [2020-10-23 20:22:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:27,983 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,579 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:28,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:22:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:22:28,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749470043] [2020-10-23 20:22:28,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:28,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:22:28,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930336144] [2020-10-23 20:22:28,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:22:28,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:28,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:22:28,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:22:28,739 INFO L87 Difference]: Start difference. First operand 312 states and 339 transitions. Second operand 5 states. [2020-10-23 20:22:29,753 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:31,288 INFO L93 Difference]: Finished difference Result 504 states and 565 transitions. [2020-10-23 20:22:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:22:31,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:22:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:31,300 INFO L225 Difference]: With dead ends: 504 [2020-10-23 20:22:31,300 INFO L226 Difference]: Without dead ends: 352 [2020-10-23 20:22:31,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:22:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-23 20:22:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 302. [2020-10-23 20:22:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-23 20:22:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 326 transitions. [2020-10-23 20:22:31,486 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 326 transitions. Word has length 167 [2020-10-23 20:22:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:31,487 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 326 transitions. [2020-10-23 20:22:31,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:22:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 326 transitions. [2020-10-23 20:22:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:22:31,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:31,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:31,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:22:31,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:31,492 INFO L82 PathProgramCache]: Analyzing trace with hash -418624897, now seen corresponding path program 1 times [2020-10-23 20:22:31,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:31,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246754577] [2020-10-23 20:22:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:31,496 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,091 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:32,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:22:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:22:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:22:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:22:32,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246754577] [2020-10-23 20:22:32,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:32,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:22:32,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562656664] [2020-10-23 20:22:32,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:22:32,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:32,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:22:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:22:32,310 INFO L87 Difference]: Start difference. First operand 302 states and 326 transitions. Second operand 11 states. [2020-10-23 20:22:33,009 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:33,521 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:33,947 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:22:34,333 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:34,742 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:35,149 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:36,608 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:39,785 INFO L93 Difference]: Finished difference Result 838 states and 966 transitions. [2020-10-23 20:22:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:22:39,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:22:39,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:39,796 INFO L225 Difference]: With dead ends: 838 [2020-10-23 20:22:39,797 INFO L226 Difference]: Without dead ends: 656 [2020-10-23 20:22:39,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:22:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-23 20:22:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 551. [2020-10-23 20:22:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-23 20:22:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 615 transitions. [2020-10-23 20:22:40,066 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 615 transitions. Word has length 180 [2020-10-23 20:22:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:40,067 INFO L481 AbstractCegarLoop]: Abstraction has 551 states and 615 transitions. [2020-10-23 20:22:40,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:22:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 615 transitions. [2020-10-23 20:22:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:22:40,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:40,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:40,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:22:40,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:40,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash -976512945, now seen corresponding path program 1 times [2020-10-23 20:22:40,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:40,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487899175] [2020-10-23 20:22:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:40,077 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,533 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:40,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:22:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:22:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:22:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:22:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:22:40,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487899175] [2020-10-23 20:22:40,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:40,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:22:40,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802510814] [2020-10-23 20:22:40,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:22:40,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:22:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:22:40,752 INFO L87 Difference]: Start difference. First operand 551 states and 615 transitions. Second operand 10 states. [2020-10-23 20:22:41,472 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:42,667 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:43,098 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:44,698 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:45,095 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:45,483 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:45,982 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:46,352 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:46,776 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:48,023 INFO L93 Difference]: Finished difference Result 1251 states and 1486 transitions. [2020-10-23 20:22:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:22:48,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:22:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:48,033 INFO L225 Difference]: With dead ends: 1251 [2020-10-23 20:22:48,034 INFO L226 Difference]: Without dead ends: 820 [2020-10-23 20:22:48,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:22:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-23 20:22:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 727. [2020-10-23 20:22:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-23 20:22:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 815 transitions. [2020-10-23 20:22:48,310 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 815 transitions. Word has length 185 [2020-10-23 20:22:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:48,311 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 815 transitions. [2020-10-23 20:22:48,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:22:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 815 transitions. [2020-10-23 20:22:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:22:48,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:48,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:48,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:22:48,317 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash 205876605, now seen corresponding path program 1 times [2020-10-23 20:22:48,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:48,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348604790] [2020-10-23 20:22:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:48,322 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,723 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:22:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:22:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:22:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:22:49,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348604790] [2020-10-23 20:22:49,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:49,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:22:49,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314563286] [2020-10-23 20:22:49,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:22:49,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:49,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:22:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:22:49,090 INFO L87 Difference]: Start difference. First operand 727 states and 815 transitions. Second operand 11 states. [2020-10-23 20:22:51,015 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:51,428 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:51,835 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:22:52,227 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:52,641 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:53,022 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:54,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:54,888 INFO L93 Difference]: Finished difference Result 1546 states and 1863 transitions. [2020-10-23 20:22:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:54,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2020-10-23 20:22:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:54,896 INFO L225 Difference]: With dead ends: 1546 [2020-10-23 20:22:54,896 INFO L226 Difference]: Without dead ends: 939 [2020-10-23 20:22:54,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:22:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-10-23 20:22:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 746. [2020-10-23 20:22:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-10-23 20:22:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 835 transitions. [2020-10-23 20:22:55,254 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 835 transitions. Word has length 240 [2020-10-23 20:22:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:55,255 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 835 transitions. [2020-10-23 20:22:55,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:22:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 835 transitions. [2020-10-23 20:22:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:22:55,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:55,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:22:55,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:22:55,272 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:22:55,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:55,273 INFO L82 PathProgramCache]: Analyzing trace with hash -568821475, now seen corresponding path program 1 times [2020-10-23 20:22:55,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:55,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564574701] [2020-10-23 20:22:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:55,277 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,728 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:55,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:22:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:22:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:22:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:22:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:22:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:22:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:22:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:22:56,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564574701] [2020-10-23 20:22:56,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:56,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:22:56,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148928706] [2020-10-23 20:22:56,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:22:56,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:56,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:22:56,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:22:56,080 INFO L87 Difference]: Start difference. First operand 746 states and 835 transitions. Second operand 14 states. [2020-10-23 20:22:56,910 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:57,321 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:57,715 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:58,124 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:58,514 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:59,977 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:00,418 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:00,872 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:01,307 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:23:01,692 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:03,725 INFO L93 Difference]: Finished difference Result 1583 states and 1901 transitions. [2020-10-23 20:23:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:23:03,726 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 240 [2020-10-23 20:23:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:03,732 INFO L225 Difference]: With dead ends: 1583 [2020-10-23 20:23:03,733 INFO L226 Difference]: Without dead ends: 957 [2020-10-23 20:23:03,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:23:03,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-23 20:23:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 758. [2020-10-23 20:23:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-23 20:23:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 847 transitions. [2020-10-23 20:23:04,109 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 847 transitions. Word has length 240 [2020-10-23 20:23:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:04,110 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 847 transitions. [2020-10-23 20:23:04,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:23:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 847 transitions. [2020-10-23 20:23:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:23:04,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:04,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:04,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:23:04,116 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:23:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:04,116 INFO L82 PathProgramCache]: Analyzing trace with hash 496605632, now seen corresponding path program 1 times [2020-10-23 20:23:04,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:04,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271842358] [2020-10-23 20:23:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:04,120 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,516 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:23:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:23:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:23:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:23:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:23:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:23:04,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271842358] [2020-10-23 20:23:04,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:04,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:23:04,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158335753] [2020-10-23 20:23:04,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:23:04,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:04,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:23:04,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:23:04,773 INFO L87 Difference]: Start difference. First operand 758 states and 847 transitions. Second operand 8 states. [2020-10-23 20:23:05,433 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:06,256 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:10,341 INFO L93 Difference]: Finished difference Result 2353 states and 2862 transitions. [2020-10-23 20:23:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 20:23:10,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-10-23 20:23:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:10,353 INFO L225 Difference]: With dead ends: 2353 [2020-10-23 20:23:10,354 INFO L226 Difference]: Without dead ends: 1715 [2020-10-23 20:23:10,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:23:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2020-10-23 20:23:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1446. [2020-10-23 20:23:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1446 states. [2020-10-23 20:23:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1644 transitions. [2020-10-23 20:23:11,070 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1644 transitions. Word has length 240 [2020-10-23 20:23:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:11,070 INFO L481 AbstractCegarLoop]: Abstraction has 1446 states and 1644 transitions. [2020-10-23 20:23:11,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:23:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1644 transitions. [2020-10-23 20:23:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-23 20:23:11,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:11,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:11,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:23:11,076 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:23:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash -881316495, now seen corresponding path program 1 times [2020-10-23 20:23:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:11,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16831736] [2020-10-23 20:23:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:11,081 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:23:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,563 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:23:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:23:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:23:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:23:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:23:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:23:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:23:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:23:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:23:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:23:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:23:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:23:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:23:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:23:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:23:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:23:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:23:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-23 20:23:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:23:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:23:11,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16831736] [2020-10-23 20:23:11,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:23:11,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:23:11,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942322281] [2020-10-23 20:23:11,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:23:11,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:23:11,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:23:11,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:23:11,908 INFO L87 Difference]: Start difference. First operand 1446 states and 1644 transitions. Second operand 15 states. [2020-10-23 20:23:12,982 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:23:14,071 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:15,776 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:23:16,623 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:23:17,153 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:17,596 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:18,466 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:23:18,876 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:19,368 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:23:19,816 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:24,082 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:23:25,125 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:23:25,527 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:23:26,018 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:23:27,810 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:23:28,646 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:23:29,481 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:23:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:23:30,602 INFO L93 Difference]: Finished difference Result 4424 states and 5405 transitions. [2020-10-23 20:23:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-23 20:23:30,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 245 [2020-10-23 20:23:30,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:23:30,626 INFO L225 Difference]: With dead ends: 4424 [2020-10-23 20:23:30,626 INFO L226 Difference]: Without dead ends: 3379 [2020-10-23 20:23:30,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=816, Invalid=3216, Unknown=0, NotChecked=0, Total=4032 [2020-10-23 20:23:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2020-10-23 20:23:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 2667. [2020-10-23 20:23:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2667 states. [2020-10-23 20:23:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3013 transitions. [2020-10-23 20:23:32,022 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3013 transitions. Word has length 245 [2020-10-23 20:23:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:23:32,023 INFO L481 AbstractCegarLoop]: Abstraction has 2667 states and 3013 transitions. [2020-10-23 20:23:32,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:23:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3013 transitions. [2020-10-23 20:23:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-23 20:23:32,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:23:32,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:23:32,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:23:32,034 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:23:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:23:32,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1391984860, now seen corresponding path program 1 times [2020-10-23 20:23:32,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:23:32,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439175920] [2020-10-23 20:23:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:23:32,520 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 90 [2020-10-23 20:23:32,680 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-23 20:23:33,063 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:23:33,196 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:23:33,639 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:23:33,782 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:23:34,242 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:23:34,375 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:23:34,910 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:23:35,069 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:23:35,556 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:23:35,692 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:23:36,145 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:23:36,291 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:23:36,723 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-23 20:23:36,848 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 20:23:37,269 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:23:37,392 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:23:37,819 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-23 20:23:37,944 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 20:23:38,407 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:23:38,549 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:23:39,025 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:23:39,178 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:23:39,645 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 90 [2020-10-23 20:23:39,781 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-23 20:23:40,263 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:23:40,414 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 20:23:41,308 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:23:42,174 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2020-10-23 20:23:43,052 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:23:43,933 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2020-10-23 20:23:43,940 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:45,302 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2020-10-23 20:23:46,525 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2020-10-23 20:23:46,535 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:47,764 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:23:48,979 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:23:48,992 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:50,183 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2020-10-23 20:23:51,312 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2020-10-23 20:23:51,321 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:52,189 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:23:53,051 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:23:53,903 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:23:54,793 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:23:54,797 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:55,969 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:23:57,188 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:23:57,200 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:58,055 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:23:58,941 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:23:59,864 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:24:00,693 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:24:00,697 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:01,826 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2020-10-23 20:24:02,970 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2020-10-23 20:24:02,975 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:04,167 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2020-10-23 20:24:05,276 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2020-10-23 20:24:05,293 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:06,420 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:24:07,544 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:24:07,554 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:08,656 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2020-10-23 20:24:09,818 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2020-10-23 20:24:09,829 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:10,740 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:24:11,640 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:24:12,500 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:24:13,399 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:24:13,403 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:14,292 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:24:15,184 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2020-10-23 20:24:16,082 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:24:16,969 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2020-10-23 20:24:16,973 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:17,866 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 203 [2020-10-23 20:24:18,742 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 203 [2020-10-23 20:24:19,629 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 202 [2020-10-23 20:24:20,514 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 202 [2020-10-23 20:24:20,517 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:24:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:20,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:20,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:21,101 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:21,101 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:21,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:24:21,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:21 BoogieIcfgContainer [2020-10-23 20:24:21,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:21,170 INFO L168 Benchmark]: Toolchain (without parser) took 118695.31 ms. Allocated memory was 157.3 MB in the beginning and 1.0 GB in the end (delta: 843.1 MB). Free memory was 133.5 MB in the beginning and 401.5 MB in the end (delta: -268.0 MB). Peak memory consumption was 575.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:21,176 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 82.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:21,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.35 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 110.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:21,179 INFO L168 Benchmark]: Boogie Preprocessor took 115.39 ms. Allocated memory is still 157.3 MB. Free memory was 110.7 MB in the beginning and 106.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:21,181 INFO L168 Benchmark]: RCFGBuilder took 1415.01 ms. Allocated memory is still 157.3 MB. Free memory was 106.5 MB in the beginning and 127.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 63.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:21,182 INFO L168 Benchmark]: TraceAbstraction took 116584.49 ms. Allocated memory was 157.3 MB in the beginning and 1.0 GB in the end (delta: 843.1 MB). Free memory was 127.2 MB in the beginning and 401.5 MB in the end (delta: -274.3 MB). Peak memory consumption was 568.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:21,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 82.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 567.35 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 110.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.39 ms. Allocated memory is still 157.3 MB. Free memory was 110.7 MB in the beginning and 106.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1415.01 ms. Allocated memory is still 157.3 MB. Free memory was 106.5 MB in the beginning and 127.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 63.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 116584.49 ms. Allocated memory was 157.3 MB in the beginning and 1.0 GB in the end (delta: 843.1 MB). Free memory was 127.2 MB in the beginning and 401.5 MB in the end (delta: -274.3 MB). Peak memory consumption was 568.8 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: [L54] int pumpRunning = 0; [L55] int systemActive = 1; [L371] int switchedOnBeforeTS ; [L589] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L786] int cleanupTimeShifts = 4; [L930] int waterLevel = 1; [L931] int methaneLevelCritical = 0; [L863] int retValue_acc ; [L864] int tmp ; [L868] FCALL select_helpers() [L869] FCALL select_features() [L870] CALL, EXPR valid_product() [L912] int retValue_acc ; [L915] retValue_acc = 1 [L916] return (retValue_acc); [L870] RET, EXPR valid_product() [L870] tmp = valid_product() [L872] COND TRUE \read(tmp) [L874] FCALL setup() [L875] CALL runTest() [L853] CALL __utac_acc__Specification5_spec__1() [L376] switchedOnBeforeTS = 0 [L853] RET __utac_acc__Specification5_spec__1() [L854] CALL test() [L301] int splverifierCounter ; [L302] int tmp ; [L303] int tmp___0 ; [L304] int tmp___1 ; [L305] int tmp___2 ; [L308] splverifierCounter = 0 [L310] COND TRUE 1 [L312] COND TRUE splverifierCounter < 4 [L318] tmp = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp) [L322] CALL waterRise() [L948] COND TRUE waterLevel < 2 [L949] waterLevel = waterLevel + 1 [L322] RET waterRise() [L328] tmp___0 = __VERIFIER_nondet_int() [L330] COND FALSE !(\read(tmp___0)) [L338] tmp___2 = __VERIFIER_nondet_int() [L340] COND TRUE \read(tmp___2) [L342] CALL startSystem() [L292] systemActive = 1 [L342] RET startSystem() [L357] CALL timeShift() [L64] CALL __utac_acc__Specification5_spec__2() [L385] CALL, EXPR isPumpRunning() [L191] int retValue_acc ; [L194] retValue_acc = pumpRunning [L195] return (retValue_acc); [L385] RET, EXPR isPumpRunning() [L385] switchedOnBeforeTS = isPumpRunning() [L64] RET __utac_acc__Specification5_spec__2() [L66] COND FALSE !(\read(pumpRunning)) [L73] COND TRUE \read(systemActive) [L75] CALL processEnvironment() [L121] int tmp ; [L124] COND FALSE !(\read(pumpRunning)) [L139] CALL processEnvironment__wrappee__highWaterSensor() [L95] int tmp ; [L98] COND TRUE ! pumpRunning [L100] CALL, EXPR isHighWaterLevel() [L236] int retValue_acc ; [L237] int tmp ; [L238] int tmp___0 ; [L242] CALL, EXPR isHighWaterSensorDry() [L1010] int retValue_acc ; [L1013] COND FALSE !(waterLevel < 2) [L1017] retValue_acc = 0 [L1018] return (retValue_acc); [L242] RET, EXPR isHighWaterSensorDry() [L242] tmp = isHighWaterSensorDry() [L244] COND FALSE !(\read(tmp)) [L247] tmp___0 = 1 [L249] retValue_acc = tmp___0 [L250] return (retValue_acc); [L100] RET, EXPR isHighWaterLevel() [L100] tmp = isHighWaterLevel() [L102] COND TRUE \read(tmp) [L104] CALL activatePump() [L155] int tmp ; [L159] CALL, EXPR isMethaneAlarm() [L180] int retValue_acc ; [L184] CALL, EXPR isMethaneLevelCritical() [L969] int retValue_acc ; [L972] retValue_acc = methaneLevelCritical [L973] return (retValue_acc); [L184] RET, EXPR isMethaneLevelCritical() [L184] retValue_acc = isMethaneLevelCritical() [L186] return (retValue_acc); [L159] RET, EXPR isMethaneAlarm() [L159] tmp = isMethaneAlarm() [L161] COND FALSE !(\read(tmp)) [L165] CALL activatePump__wrappee__lowWaterSensor() [L149] pumpRunning = 1 [L165] RET activatePump__wrappee__lowWaterSensor() [L104] RET activatePump() [L139] RET processEnvironment__wrappee__highWaterSensor() [L75] RET processEnvironment() [L81] CALL __utac_acc__Specification5_spec__3() [L391] int tmp ; [L392] int tmp___0 ; [L396] CALL, EXPR getWaterLevel() [L1001] int retValue_acc ; [L1004] retValue_acc = waterLevel [L1005] return (retValue_acc); [L396] RET, EXPR getWaterLevel() [L396] tmp = getWaterLevel() [L398] COND FALSE !(tmp != 2) [L81] RET __utac_acc__Specification5_spec__3() [L357] RET timeShift() [L310] COND TRUE 1 [L312] COND TRUE splverifierCounter < 4 [L318] tmp = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp)) [L328] tmp___0 = __VERIFIER_nondet_int() [L330] COND FALSE !(\read(tmp___0)) [L338] tmp___2 = __VERIFIER_nondet_int() [L340] COND TRUE \read(tmp___2) [L342] CALL startSystem() [L292] systemActive = 1 [L342] RET startSystem() [L357] CALL timeShift() [L64] CALL __utac_acc__Specification5_spec__2() [L385] CALL, EXPR isPumpRunning() [L191] int retValue_acc ; [L194] retValue_acc = pumpRunning [L195] return (retValue_acc); [L385] RET, EXPR isPumpRunning() [L385] switchedOnBeforeTS = isPumpRunning() [L64] RET __utac_acc__Specification5_spec__2() [L66] COND TRUE \read(pumpRunning) [L68] CALL lowerWaterLevel() [L936] COND TRUE waterLevel > 0 [L937] waterLevel = waterLevel - 1 [L68] RET lowerWaterLevel() [L73] COND TRUE \read(systemActive) [L75] CALL processEnvironment() [L121] int tmp ; [L124] COND TRUE \read(pumpRunning) [L126] CALL, EXPR isLowWaterLevel() [L255] int retValue_acc ; [L256] int tmp ; [L257] int tmp___0 ; [L261] CALL, EXPR isLowWaterSensorDry() [L1024] int retValue_acc ; [L1027] retValue_acc = waterLevel == 0 [L1028] return (retValue_acc); [L261] RET, EXPR isLowWaterSensorDry() [L261] tmp = isLowWaterSensorDry() [L263] COND TRUE \read(tmp) [L264] tmp___0 = 0 [L268] retValue_acc = tmp___0 [L269] return (retValue_acc); [L126] RET, EXPR isLowWaterLevel() [L126] tmp = isLowWaterLevel() [L128] COND FALSE !(\read(tmp)) [L134] CALL processEnvironment__wrappee__highWaterSensor() [L95] int tmp ; [L98] COND FALSE !(! pumpRunning) [L113] FCALL processEnvironment__wrappee__base() [L134] RET processEnvironment__wrappee__highWaterSensor() [L75] RET processEnvironment() [L81] CALL __utac_acc__Specification5_spec__3() [L391] int tmp ; [L392] int tmp___0 ; [L396] CALL, EXPR getWaterLevel() [L1001] int retValue_acc ; [L1004] retValue_acc = waterLevel [L1005] return (retValue_acc); [L396] RET, EXPR getWaterLevel() [L396] tmp = getWaterLevel() [L398] COND TRUE tmp != 2 [L400] CALL, EXPR isPumpRunning() [L191] int retValue_acc ; [L194] retValue_acc = pumpRunning [L195] return (retValue_acc); [L400] RET, EXPR isPumpRunning() [L400] tmp___0 = isPumpRunning() [L402] COND TRUE \read(tmp___0) [L403] COND TRUE ! switchedOnBeforeTS [L405] CALL __automaton_fail() [L925] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product60.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 46 procedures, 682 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 116.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 57.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2487 SDtfs, 7931 SDslu, 5356 SDs, 0 SdLazy, 11670 SolverSat, 2819 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 291 SyntacticMatches, 3 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 27.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2667occurred 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: 3.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 1672 StatesRemovedByMinimization, 8 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...