/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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:21:29,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:21:29,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:21:29,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:21:29,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:21:29,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:21:29,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:21:29,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:21:29,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:21:29,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:21:29,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:21:29,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:21:29,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:21:29,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:21:29,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:21:29,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:21:29,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:21:29,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:21:29,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:21:29,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:21:29,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:21:29,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:21:29,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:21:29,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:21:29,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:21:29,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:21:29,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:21:29,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:21:29,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:21:29,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:21:29,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:21:29,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:21:29,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:21:29,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:21:29,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:21:29,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:21:29,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:21:29,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:21:29,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:21:29,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:21:29,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:21:29,290 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 20:21:29,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:21:29,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:21:29,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:21:29,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:21:29,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:21:29,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:21:29,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:21:29,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:21:29,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:21:29,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:21:29,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:21:29,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:21:29,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:21:29,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:21:29,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:21:29,307 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:21:29,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:21:29,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:21:29,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:21:29,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:21:29,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:21:29,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:21:29,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:21:29,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:21:29,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:21:29,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:21:29,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:21:29,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:21:29,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2020-10-23 20:21:29,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce2ab63e/3062ccdfbd404e37b80ad5aa54b63dd0/FLAG114a10ead [2020-10-23 20:21:30,606 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:21:30,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2020-10-23 20:21:30,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce2ab63e/3062ccdfbd404e37b80ad5aa54b63dd0/FLAG114a10ead [2020-10-23 20:21:30,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce2ab63e/3062ccdfbd404e37b80ad5aa54b63dd0 [2020-10-23 20:21:30,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:21:30,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:21:30,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:30,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:21:30,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:21:30,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d732c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:30, skipping insertion in model container [2020-10-23 20:21:30,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:30" (1/1) ... [2020-10-23 20:21:30,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:21:30,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:21:31,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:31,428 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:21:31,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:21:31,598 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:21:31,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31 WrapperNode [2020-10-23 20:21:31,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:21:31,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:21:31,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:21:31,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:21:31,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (1/1) ... [2020-10-23 20:21:31,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (1/1) ... [2020-10-23 20:21:31,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (1/1) ... [2020-10-23 20:21:31,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (1/1) ... [2020-10-23 20:21:31,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (1/1) ... [2020-10-23 20:21:31,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (1/1) ... [2020-10-23 20:21:31,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (1/1) ... [2020-10-23 20:21:31,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:21:31,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:21:31,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:21:31,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:21:31,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (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 20:21:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:21:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:21:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:21:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:21:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:21:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:21:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:21:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:21:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:21:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:21:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:21:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:21:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:21:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:21:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:21:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:21:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:21:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:21:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:21:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:21:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:21:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:21:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:21:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:21:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:21:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:21:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:21:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:21:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:21:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:21:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:21:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:21:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:21:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:21:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:21:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:21:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:21:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:21:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:21:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:21:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:21:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:21:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:21:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:21:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:21:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:21:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:21:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:21:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:21:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:21:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:21:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:21:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:21:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:21:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:21:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:21:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:21:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:21:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:21:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:21:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:21:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:21:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:21:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:21:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:21:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:21:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:21:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:21:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:21:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:21:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:21:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:21:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:21:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:21:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:21:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:21:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:21:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:21:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:21:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:21:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:21:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:21:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:21:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:21:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:21:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:21:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:21:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:21:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:21:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:21:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:21:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:21:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:21:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:21:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:21:33,428 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:21:33,428 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:21:33,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:33 BoogieIcfgContainer [2020-10-23 20:21:33,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:21:33,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:21:33,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:21:33,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:21:33,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:30" (1/3) ... [2020-10-23 20:21:33,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211a5161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:33, skipping insertion in model container [2020-10-23 20:21:33,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:31" (2/3) ... [2020-10-23 20:21:33,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211a5161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:33, skipping insertion in model container [2020-10-23 20:21:33,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:33" (3/3) ... [2020-10-23 20:21:33,441 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2020-10-23 20:21:33,454 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:21:33,460 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:21:33,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:21:33,502 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:21:33,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:21:33,502 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:21:33,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:21:33,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:21:33,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:21:33,503 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:21:33,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:21:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states. [2020-10-23 20:21:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:21:33,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:33,551 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 20:21:33,551 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 20:21:33,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:33,559 INFO L82 PathProgramCache]: Analyzing trace with hash -9364748, now seen corresponding path program 1 times [2020-10-23 20:21:33,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:33,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051214148] [2020-10-23 20:21:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:33,648 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,450 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:34,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:21:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:21:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:21:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:34,705 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 20:21:34,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051214148] [2020-10-23 20:21:34,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:34,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:21:34,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241459230] [2020-10-23 20:21:34,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:21:34,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:34,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:21:34,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:34,736 INFO L87 Difference]: Start difference. First operand 340 states. Second operand 4 states. [2020-10-23 20:21:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:36,558 INFO L93 Difference]: Finished difference Result 532 states and 625 transitions. [2020-10-23 20:21:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:21:36,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:21:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:36,581 INFO L225 Difference]: With dead ends: 532 [2020-10-23 20:21:36,581 INFO L226 Difference]: Without dead ends: 333 [2020-10-23 20:21:36,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:21:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-23 20:21:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 286. [2020-10-23 20:21:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-23 20:21:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 312 transitions. [2020-10-23 20:21:36,808 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 312 transitions. Word has length 166 [2020-10-23 20:21:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:36,810 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 312 transitions. [2020-10-23 20:21:36,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:21:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 312 transitions. [2020-10-23 20:21:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:21:36,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:36,816 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 20:21:36,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:21:36,816 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 20:21:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash 668052842, now seen corresponding path program 1 times [2020-10-23 20:21:36,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:36,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062321659] [2020-10-23 20:21:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:36,822 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,331 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:21:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:21:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:37,442 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 20:21:37,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062321659] [2020-10-23 20:21:37,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:37,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:21:37,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898980602] [2020-10-23 20:21:37,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:21:37,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:37,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:21:37,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:21:37,446 INFO L87 Difference]: Start difference. First operand 286 states and 312 transitions. Second operand 5 states. [2020-10-23 20:21:38,349 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:39,768 INFO L93 Difference]: Finished difference Result 452 states and 509 transitions. [2020-10-23 20:21:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:21:39,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:21:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:39,782 INFO L225 Difference]: With dead ends: 452 [2020-10-23 20:21:39,782 INFO L226 Difference]: Without dead ends: 322 [2020-10-23 20:21:39,789 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 20:21:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-23 20:21:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 276. [2020-10-23 20:21:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-23 20:21:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 299 transitions. [2020-10-23 20:21:39,909 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 299 transitions. Word has length 167 [2020-10-23 20:21:39,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:39,910 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 299 transitions. [2020-10-23 20:21:39,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:21:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 299 transitions. [2020-10-23 20:21:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:21:39,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:39,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:39,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:21:39,913 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 20:21:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2006518395, now seen corresponding path program 1 times [2020-10-23 20:21:39,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:39,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115845839] [2020-10-23 20:21:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:39,919 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,443 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:21:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:21:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:21:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:40,670 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 20:21:40,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115845839] [2020-10-23 20:21:40,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:40,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:21:40,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943731454] [2020-10-23 20:21:40,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:21:40,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:40,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:21:40,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:21:40,673 INFO L87 Difference]: Start difference. First operand 276 states and 299 transitions. Second operand 10 states. [2020-10-23 20:21:41,363 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:41,874 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:42,268 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:42,703 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:43,129 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:43,527 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:45,106 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:47,873 INFO L93 Difference]: Finished difference Result 730 states and 838 transitions. [2020-10-23 20:21:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:21:47,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:21:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:47,881 INFO L225 Difference]: With dead ends: 730 [2020-10-23 20:21:47,881 INFO L226 Difference]: Without dead ends: 574 [2020-10-23 20:21:47,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:21:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-23 20:21:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 503. [2020-10-23 20:21:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-23 20:21:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 565 transitions. [2020-10-23 20:21:48,143 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 565 transitions. Word has length 176 [2020-10-23 20:21:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:48,145 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 565 transitions. [2020-10-23 20:21:48,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:21:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 565 transitions. [2020-10-23 20:21:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:21:48,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:48,152 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 20:21:48,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:21:48,152 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 20:21:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash 132723720, now seen corresponding path program 1 times [2020-10-23 20:21:48,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:48,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824228067] [2020-10-23 20:21:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:48,162 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,633 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:21:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:21:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:21:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:21:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:48,829 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 20:21:48,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824228067] [2020-10-23 20:21:48,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:48,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:21:48,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781879586] [2020-10-23 20:21:48,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:21:48,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:21:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:21:48,841 INFO L87 Difference]: Start difference. First operand 503 states and 565 transitions. Second operand 10 states. [2020-10-23 20:21:49,733 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:50,788 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:51,184 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:52,550 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:52,959 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:53,419 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:53,915 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:54,334 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:54,722 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:55,790 INFO L93 Difference]: Finished difference Result 1143 states and 1368 transitions. [2020-10-23 20:21:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:21:55,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:21:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:55,798 INFO L225 Difference]: With dead ends: 1143 [2020-10-23 20:21:55,798 INFO L226 Difference]: Without dead ends: 760 [2020-10-23 20:21:55,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:21:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-23 20:21:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 671. [2020-10-23 20:21:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-23 20:21:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 757 transitions. [2020-10-23 20:21:56,122 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 757 transitions. Word has length 185 [2020-10-23 20:21:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:56,123 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 757 transitions. [2020-10-23 20:21:56,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:21:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 757 transitions. [2020-10-23 20:21:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:21:56,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:56,128 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] [2020-10-23 20:21:56,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:21:56,128 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 20:21:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1054422146, now seen corresponding path program 1 times [2020-10-23 20:21:56,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:56,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416271693] [2020-10-23 20:21:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:56,133 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,525 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:21:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:21:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:21:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:21:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:56,768 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 20:21:56,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416271693] [2020-10-23 20:21:56,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:56,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:21:56,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458001400] [2020-10-23 20:21:56,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:21:56,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:21:56,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:21:56,771 INFO L87 Difference]: Start difference. First operand 671 states and 757 transitions. Second operand 10 states. [2020-10-23 20:21:58,543 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:58,952 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:59,362 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:21:59,765 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:00,187 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:00,550 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:01,787 INFO L93 Difference]: Finished difference Result 1357 states and 1600 transitions. [2020-10-23 20:22:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:22:01,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 214 [2020-10-23 20:22:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:01,795 INFO L225 Difference]: With dead ends: 1357 [2020-10-23 20:22:01,795 INFO L226 Difference]: Without dead ends: 806 [2020-10-23 20:22:01,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:22:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-10-23 20:22:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 690. [2020-10-23 20:22:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-23 20:22:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 777 transitions. [2020-10-23 20:22:02,124 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 777 transitions. Word has length 214 [2020-10-23 20:22:02,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:02,124 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 777 transitions. [2020-10-23 20:22:02,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:22:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 777 transitions. [2020-10-23 20:22:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:22:02,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:02,129 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] [2020-10-23 20:22:02,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:22:02,129 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 20:22:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:02,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1468053538, now seen corresponding path program 1 times [2020-10-23 20:22:02,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:02,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245289661] [2020-10-23 20:22:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:02,134 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,522 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:22:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:22:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:02,817 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 20:22:02,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245289661] [2020-10-23 20:22:02,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:02,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:22:02,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035051507] [2020-10-23 20:22:02,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:22:02,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:22:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:22:02,823 INFO L87 Difference]: Start difference. First operand 690 states and 777 transitions. Second operand 13 states. [2020-10-23 20:22:03,698 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:04,113 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:22:04,508 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:04,881 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:05,257 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:06,525 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:06,917 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:07,348 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:07,774 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:22:08,148 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:09,692 INFO L93 Difference]: Finished difference Result 1398 states and 1663 transitions. [2020-10-23 20:22:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:09,693 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2020-10-23 20:22:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:09,699 INFO L225 Difference]: With dead ends: 1398 [2020-10-23 20:22:09,699 INFO L226 Difference]: Without dead ends: 828 [2020-10-23 20:22:09,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:22:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-23 20:22:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 702. [2020-10-23 20:22:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-23 20:22:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 789 transitions. [2020-10-23 20:22:09,966 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 789 transitions. Word has length 214 [2020-10-23 20:22:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:09,967 INFO L481 AbstractCegarLoop]: Abstraction has 702 states and 789 transitions. [2020-10-23 20:22:09,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:22:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 789 transitions. [2020-10-23 20:22:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:22:09,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:09,972 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] [2020-10-23 20:22:09,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:22:09,972 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 20:22:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1398535429, now seen corresponding path program 1 times [2020-10-23 20:22:09,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:09,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515159203] [2020-10-23 20:22:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:09,976 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,391 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:22:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:22:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:22:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:22:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:10,632 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 20:22:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515159203] [2020-10-23 20:22:10,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:10,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:22:10,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218674467] [2020-10-23 20:22:10,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:22:10,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:22:10,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:22:10,635 INFO L87 Difference]: Start difference. First operand 702 states and 789 transitions. Second operand 7 states. [2020-10-23 20:22:11,361 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:12,155 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:15,470 INFO L93 Difference]: Finished difference Result 2085 states and 2498 transitions. [2020-10-23 20:22:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:22:15,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-23 20:22:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:15,482 INFO L225 Difference]: With dead ends: 2085 [2020-10-23 20:22:15,482 INFO L226 Difference]: Without dead ends: 1503 [2020-10-23 20:22:15,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:22:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-10-23 20:22:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1378. [2020-10-23 20:22:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2020-10-23 20:22:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1574 transitions. [2020-10-23 20:22:16,049 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1574 transitions. Word has length 214 [2020-10-23 20:22:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:16,049 INFO L481 AbstractCegarLoop]: Abstraction has 1378 states and 1574 transitions. [2020-10-23 20:22:16,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:22:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1574 transitions. [2020-10-23 20:22:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-23 20:22:16,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:16,055 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] [2020-10-23 20:22:16,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:22:16,055 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 20:22:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:16,056 INFO L82 PathProgramCache]: Analyzing trace with hash -2131180218, now seen corresponding path program 1 times [2020-10-23 20:22:16,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:16,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614433885] [2020-10-23 20:22:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:16,060 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:22:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,552 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:22:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:22:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:22:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:22:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:22:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:22:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:22:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:22:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:22:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:22:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:22:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:22:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:22:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 20:22:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 20:22:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:22:16,860 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 20:22:16,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614433885] [2020-10-23 20:22:16,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:22:16,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:22:16,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972312460] [2020-10-23 20:22:16,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:22:16,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:22:16,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:22:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:22:16,863 INFO L87 Difference]: Start difference. First operand 1378 states and 1574 transitions. Second operand 14 states. [2020-10-23 20:22:17,950 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:22:18,992 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:20,544 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:22:21,300 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:22:21,816 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:22,272 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:23,070 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:22:23,461 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:23,907 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:22:24,294 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:27,676 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:22:28,678 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:22:29,040 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:22:29,432 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:22:30,804 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:22:31,525 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:22:32,313 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:22:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:22:33,243 INFO L93 Difference]: Finished difference Result 3952 states and 4748 transitions. [2020-10-23 20:22:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-23 20:22:33,245 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 219 [2020-10-23 20:22:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:22:33,263 INFO L225 Difference]: With dead ends: 3952 [2020-10-23 20:22:33,264 INFO L226 Difference]: Without dead ends: 2971 [2020-10-23 20:22:33,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=510, Invalid=1940, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 20:22:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-10-23 20:22:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2535. [2020-10-23 20:22:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-10-23 20:22:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 2877 transitions. [2020-10-23 20:22:34,750 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 2877 transitions. Word has length 219 [2020-10-23 20:22:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:22:34,751 INFO L481 AbstractCegarLoop]: Abstraction has 2535 states and 2877 transitions. [2020-10-23 20:22:34,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:22:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 2877 transitions. [2020-10-23 20:22:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-23 20:22:34,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:22:34,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:34,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:22:34,761 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 20:22:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:22:34,761 INFO L82 PathProgramCache]: Analyzing trace with hash 875569867, now seen corresponding path program 1 times [2020-10-23 20:22:34,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:22:34,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460620323] [2020-10-23 20:22:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:22:35,060 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:22:35,469 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:22:35,826 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:22:36,241 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:22:36,348 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 20:22:36,623 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:22:37,032 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:22:37,140 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 20:22:37,414 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:22:37,540 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-23 20:22:37,798 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:22:38,149 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:22:38,506 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:22:38,904 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:22:39,309 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:22:39,416 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:22:39,714 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-23 20:22:40,115 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:22:41,194 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:42,072 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:42,963 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:43,789 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:22:43,796 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:44,684 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:45,531 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:46,358 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:47,176 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:22:47,188 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:48,001 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:48,802 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:49,567 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:50,354 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:22:50,361 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:50,932 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:51,539 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:52,099 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:52,657 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:53,213 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:53,776 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:54,349 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:54,961 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:22:54,965 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:55,736 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:22:56,502 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:22:57,268 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:22:58,087 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-23 20:22:58,100 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:58,638 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:22:59,210 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:22:59,785 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:23:00,357 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:23:00,924 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:23:01,544 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:23:02,124 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:23:02,687 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:23:02,691 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:03,422 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:23:04,154 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:23:04,910 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:23:05,665 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:23:05,671 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:06,431 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:23:07,193 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:23:07,987 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:23:08,799 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:23:08,807 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:09,636 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:23:10,451 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:23:11,281 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:23:12,085 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:23:12,090 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:12,911 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:23:13,771 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:23:14,645 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:23:15,481 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:23:15,488 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:16,108 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:16,737 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:17,371 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:17,974 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:18,597 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:19,204 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:19,814 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:20,415 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:20,418 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:21,022 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:21,664 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:22,264 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:22,832 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:23,408 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:23,974 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:24,567 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:25,197 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:25,199 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:25,788 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:26,408 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:27,009 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:27,606 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:28,194 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:28,809 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:23:29,439 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:30,051 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:23:30,054 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:30,670 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:31,266 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:31,862 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:32,452 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:33,029 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:33,598 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:23:34,166 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:34,735 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:23:34,737 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:23:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:23:35,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:23:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:23:35,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:23:35,720 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:23:35,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:23:35,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:23:35,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:23:35 BoogieIcfgContainer [2020-10-23 20:23:35,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:23:35,775 INFO L168 Benchmark]: Toolchain (without parser) took 124848.22 ms. Allocated memory was 151.0 MB in the beginning and 974.1 MB in the end (delta: 823.1 MB). Free memory was 126.8 MB in the beginning and 392.3 MB in the end (delta: -265.4 MB). Peak memory consumption was 558.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:35,776 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 120.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:23:35,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.54 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:35,777 INFO L168 Benchmark]: Boogie Preprocessor took 177.21 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 131.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:35,777 INFO L168 Benchmark]: RCFGBuilder took 1652.11 ms. Allocated memory is still 151.0 MB. Free memory was 131.4 MB in the beginning and 83.4 MB in the end (delta: 48.0 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:35,777 INFO L168 Benchmark]: TraceAbstraction took 122337.48 ms. Allocated memory was 151.0 MB in the beginning and 974.1 MB in the end (delta: 823.1 MB). Free memory was 83.4 MB in the beginning and 392.3 MB in the end (delta: -308.9 MB). Peak memory consumption was 514.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:23:35,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 120.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 667.54 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 177.21 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 131.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1652.11 ms. Allocated memory is still 151.0 MB. Free memory was 131.4 MB in the beginning and 83.4 MB in the end (delta: 48.0 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 122337.48 ms. Allocated memory was 151.0 MB in the beginning and 974.1 MB in the end (delta: 823.1 MB). Free memory was 83.4 MB in the beginning and 392.3 MB in the end (delta: -308.9 MB). Peak memory consumption was 514.3 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: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L270] int cleanupTimeShifts = 4; [L645] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L955] int switchedOnBeforeTS ; [L351] int retValue_acc ; [L352] int tmp ; [L356] FCALL select_helpers() [L357] FCALL select_features() [L358] CALL, EXPR valid_product() [L467] int retValue_acc ; [L470] retValue_acc = 1 [L471] return (retValue_acc); [L358] RET, EXPR valid_product() [L358] tmp = valid_product() [L360] COND TRUE \read(tmp) [L362] FCALL setup() [L363] CALL runTest() [L341] CALL __utac_acc__Specification5_spec__1() [L960] switchedOnBeforeTS = 0 [L341] RET __utac_acc__Specification5_spec__1() [L342] CALL test() [L375] int splverifierCounter ; [L376] int tmp ; [L377] int tmp___0 ; [L378] int tmp___1 ; [L379] int tmp___2 ; [L382] splverifierCounter = 0 [L384] COND TRUE 1 [L386] COND TRUE splverifierCounter < 4 [L392] tmp = __VERIFIER_nondet_int() [L394] COND TRUE \read(tmp) [L396] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L396] RET waterRise() [L402] tmp___0 = __VERIFIER_nondet_int() [L404] COND FALSE !(\read(tmp___0)) [L412] tmp___2 = __VERIFIER_nondet_int() [L414] COND TRUE \read(tmp___2) [L429] CALL timeShift() [L63] CALL __utac_acc__Specification5_spec__2() [L969] CALL, EXPR isPumpRunning() [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L969] RET, EXPR isPumpRunning() [L969] switchedOnBeforeTS = isPumpRunning() [L63] RET __utac_acc__Specification5_spec__2() [L65] COND FALSE !(\read(pumpRunning)) [L72] COND TRUE \read(systemActive) [L74] CALL processEnvironment() [L120] int tmp ; [L123] COND FALSE !(\read(pumpRunning)) [L138] CALL processEnvironment__wrappee__highWaterSensor() [L94] int tmp ; [L97] COND TRUE ! pumpRunning [L99] CALL, EXPR isHighWaterLevel() [L217] int retValue_acc ; [L218] int tmp ; [L219] int tmp___0 ; [L223] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L223] RET, EXPR isHighWaterSensorDry() [L223] tmp = isHighWaterSensorDry() [L225] COND FALSE !(\read(tmp)) [L228] tmp___0 = 1 [L230] retValue_acc = tmp___0 [L231] return (retValue_acc); [L99] RET, EXPR isHighWaterLevel() [L99] tmp = isHighWaterLevel() [L101] COND TRUE \read(tmp) [L103] CALL activatePump() [L148] pumpRunning = 1 [L103] RET activatePump() [L138] RET processEnvironment__wrappee__highWaterSensor() [L74] RET processEnvironment() [L80] CALL __utac_acc__Specification5_spec__3() [L975] int tmp ; [L976] int tmp___0 ; [L980] CALL, EXPR getWaterLevel() [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); [L980] RET, EXPR getWaterLevel() [L980] tmp = getWaterLevel() [L982] COND FALSE !(tmp != 2) [L80] RET __utac_acc__Specification5_spec__3() [L429] RET timeShift() [L384] COND TRUE 1 [L386] COND TRUE splverifierCounter < 4 [L392] tmp = __VERIFIER_nondet_int() [L394] COND FALSE !(\read(tmp)) [L402] tmp___0 = __VERIFIER_nondet_int() [L404] COND FALSE !(\read(tmp___0)) [L412] tmp___2 = __VERIFIER_nondet_int() [L414] COND TRUE \read(tmp___2) [L429] CALL timeShift() [L63] CALL __utac_acc__Specification5_spec__2() [L969] CALL, EXPR isPumpRunning() [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L969] RET, EXPR isPumpRunning() [L969] switchedOnBeforeTS = isPumpRunning() [L63] RET __utac_acc__Specification5_spec__2() [L65] COND TRUE \read(pumpRunning) [L67] CALL lowerWaterLevel() [L849] COND TRUE waterLevel > 0 [L850] waterLevel = waterLevel - 1 [L67] RET lowerWaterLevel() [L72] COND TRUE \read(systemActive) [L74] CALL processEnvironment() [L120] int tmp ; [L123] COND TRUE \read(pumpRunning) [L125] CALL, EXPR isLowWaterLevel() [L236] int retValue_acc ; [L237] int tmp ; [L238] int tmp___0 ; [L242] CALL, EXPR isLowWaterSensorDry() [L937] int retValue_acc ; [L940] retValue_acc = waterLevel == 0 [L941] return (retValue_acc); [L242] RET, EXPR isLowWaterSensorDry() [L242] tmp = isLowWaterSensorDry() [L244] COND TRUE \read(tmp) [L245] tmp___0 = 0 [L249] retValue_acc = tmp___0 [L250] return (retValue_acc); [L125] RET, EXPR isLowWaterLevel() [L125] tmp = isLowWaterLevel() [L127] COND FALSE !(\read(tmp)) [L133] CALL processEnvironment__wrappee__highWaterSensor() [L94] int tmp ; [L97] COND FALSE !(! pumpRunning) [L112] FCALL processEnvironment__wrappee__base() [L133] RET processEnvironment__wrappee__highWaterSensor() [L74] RET processEnvironment() [L80] CALL __utac_acc__Specification5_spec__3() [L975] int tmp ; [L976] int tmp___0 ; [L980] CALL, EXPR getWaterLevel() [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); [L980] RET, EXPR getWaterLevel() [L980] tmp = getWaterLevel() [L982] COND TRUE tmp != 2 [L984] CALL, EXPR isPumpRunning() [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L984] RET, EXPR isPumpRunning() [L984] tmp___0 = isPumpRunning() [L986] COND TRUE \read(tmp___0) [L987] COND TRUE ! switchedOnBeforeTS [L989] CALL __automaton_fail() [L950] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product51.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 669 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 122.2s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 51.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2286 SDtfs, 4977 SDslu, 4708 SDs, 0 SdLazy, 10025 SolverSat, 1470 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 243 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2535occurred 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: 3.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 1056 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...