/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:08:34,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:08:34,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:08:34,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:08:34,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:08:34,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:08:34,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:08:34,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:08:34,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:08:34,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:08:34,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:08:34,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:08:34,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:08:34,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:08:34,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:08:34,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:08:34,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:08:34,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:08:34,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:08:34,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:08:34,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:08:34,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:08:34,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:08:34,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:08:34,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:08:34,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:08:34,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:08:34,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:08:34,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:08:34,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:08:34,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:08:34,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:08:34,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:08:34,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:08:34,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:08:34,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:08:34,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:08:34,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:08:34,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:08:34,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:08:34,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:08:34,522 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 20:08:34,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:08:34,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:08:34,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:08:34,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:08:34,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:08:34,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:08:34,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:08:34,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:08:34,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:08:34,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:08:34,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:08:34,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:08:34,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:08:34,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:08:34,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:08:34,561 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:08:34,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:08:34,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:08:34,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:08:34,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:08:34,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:08:34,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:08:34,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:08:35,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:08:35,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:08:35,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:08:35,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:08:35,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:08:35,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2020-10-23 20:08:35,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c415c09/962037bb6ad244dfb808543ac0433246/FLAG92e1e325e [2020-10-23 20:08:36,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:08:36,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product32.cil.c [2020-10-23 20:08:36,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c415c09/962037bb6ad244dfb808543ac0433246/FLAG92e1e325e [2020-10-23 20:08:36,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c415c09/962037bb6ad244dfb808543ac0433246 [2020-10-23 20:08:36,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:08:36,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:08:36,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:08:36,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:08:36,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:08:36,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:08:36" (1/1) ... [2020-10-23 20:08:36,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a11ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:36, skipping insertion in model container [2020-10-23 20:08:36,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:08:36" (1/1) ... [2020-10-23 20:08:36,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:08:36,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:08:36,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:08:36,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:08:36,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:08:37,044 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:08:37,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37 WrapperNode [2020-10-23 20:08:37,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:08:37,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:08:37,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:08:37,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:08:37,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (1/1) ... [2020-10-23 20:08:37,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (1/1) ... [2020-10-23 20:08:37,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (1/1) ... [2020-10-23 20:08:37,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (1/1) ... [2020-10-23 20:08:37,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (1/1) ... [2020-10-23 20:08:37,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (1/1) ... [2020-10-23 20:08:37,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (1/1) ... [2020-10-23 20:08:37,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:08:37,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:08:37,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:08:37,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:08:37,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (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 20:08:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:08:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:08:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:08:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:08:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:08:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:08:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:08:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:08:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:08:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:08:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:08:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:08:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:08:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:08:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:08:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:08:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:08:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:08:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:08:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:08:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:08:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:08:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:08:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:08:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:08:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:08:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:08:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:08:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:08:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:08:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:08:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:08:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:08:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:08:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:08:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:08:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:08:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:08:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:08:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:08:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:08:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:08:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:08:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:08:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:08:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:08:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:08:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:08:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:08:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:08:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:08:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:08:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:08:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:08:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:08:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:08:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:08:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:08:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:08:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:08:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:08:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:08:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:08:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:08:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:08:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:08:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:08:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:08:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:08:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:08:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:08:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:08:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:08:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:08:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:08:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:08:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:08:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:08:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:08:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:08:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:08:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:08:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:08:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:08:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:08:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:08:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:08:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:08:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:08:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:08:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:08:38,699 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:08:38,699 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:08:38,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:08:38 BoogieIcfgContainer [2020-10-23 20:08:38,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:08:38,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:08:38,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:08:38,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:08:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:08:36" (1/3) ... [2020-10-23 20:08:38,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c47cfc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:08:38, skipping insertion in model container [2020-10-23 20:08:38,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:37" (2/3) ... [2020-10-23 20:08:38,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c47cfc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:08:38, skipping insertion in model container [2020-10-23 20:08:38,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:08:38" (3/3) ... [2020-10-23 20:08:38,713 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product32.cil.c [2020-10-23 20:08:38,727 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:08:38,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:08:38,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:08:38,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:08:38,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:08:38,776 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:08:38,777 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:08:38,777 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:08:38,777 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:08:38,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:08:38,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:08:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states. [2020-10-23 20:08:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:08:38,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:08:38,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:08:38,827 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 20:08:38,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:08:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1296138864, now seen corresponding path program 1 times [2020-10-23 20:08:38,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:08:38,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305801271] [2020-10-23 20:08:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:08:38,927 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:08:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,693 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:08:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:08:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:08:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:08:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:08:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:08:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:08:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:08:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:39,905 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 20:08:39,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305801271] [2020-10-23 20:08:39,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:08:39,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:08:39,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927054658] [2020-10-23 20:08:39,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:08:39,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:08:39,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:08:39,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:08:39,935 INFO L87 Difference]: Start difference. First operand 329 states. Second operand 3 states. [2020-10-23 20:08:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:08:41,761 INFO L93 Difference]: Finished difference Result 498 states and 594 transitions. [2020-10-23 20:08:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:08:41,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:08:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:08:41,780 INFO L225 Difference]: With dead ends: 498 [2020-10-23 20:08:41,781 INFO L226 Difference]: Without dead ends: 309 [2020-10-23 20:08:41,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:08:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-23 20:08:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-10-23 20:08:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-23 20:08:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2020-10-23 20:08:42,003 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 148 [2020-10-23 20:08:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:08:42,004 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2020-10-23 20:08:42,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:08:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2020-10-23 20:08:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:08:42,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:08:42,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:08:42,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:08:42,011 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 20:08:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:08:42,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1083173772, now seen corresponding path program 1 times [2020-10-23 20:08:42,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:08:42,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535629592] [2020-10-23 20:08:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:08:42,017 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:08:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,461 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:08:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:08:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:08:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:08:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:08:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:08:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:08:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:08:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:42,564 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 20:08:42,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535629592] [2020-10-23 20:08:42,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:08:42,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:08:42,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965919511] [2020-10-23 20:08:42,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:08:42,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:08:42,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:08:42,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:08:42,570 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand 4 states. [2020-10-23 20:08:43,451 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:08:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:08:44,783 INFO L93 Difference]: Finished difference Result 402 states and 453 transitions. [2020-10-23 20:08:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:08:44,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:08:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:08:44,794 INFO L225 Difference]: With dead ends: 402 [2020-10-23 20:08:44,795 INFO L226 Difference]: Without dead ends: 292 [2020-10-23 20:08:44,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:08:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-23 20:08:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-10-23 20:08:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 20:08:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-10-23 20:08:44,976 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 149 [2020-10-23 20:08:44,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:08:44,979 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-10-23 20:08:44,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:08:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-10-23 20:08:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:08:44,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:08:44,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:08:44,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:08:44,986 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 20:08:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:08:44,987 INFO L82 PathProgramCache]: Analyzing trace with hash -579150009, now seen corresponding path program 1 times [2020-10-23 20:08:44,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:08:44,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758898414] [2020-10-23 20:08:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:08:44,991 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:08:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,519 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:08:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:08:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:08:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:08:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:08:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:08:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:08:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:08:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:08:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:45,714 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 20:08:45,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758898414] [2020-10-23 20:08:45,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:08:45,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:08:45,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742183076] [2020-10-23 20:08:45,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:08:45,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:08:45,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:08:45,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:08:45,717 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 10 states. [2020-10-23 20:08:46,498 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:08:46,988 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:08:47,419 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:08:47,829 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:08:48,254 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:08:48,658 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:08:49,914 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:08:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:08:53,120 INFO L93 Difference]: Finished difference Result 691 states and 806 transitions. [2020-10-23 20:08:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:08:53,127 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:08:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:08:53,134 INFO L225 Difference]: With dead ends: 691 [2020-10-23 20:08:53,134 INFO L226 Difference]: Without dead ends: 551 [2020-10-23 20:08:53,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:08:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-23 20:08:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 454. [2020-10-23 20:08:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-10-23 20:08:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 508 transitions. [2020-10-23 20:08:53,366 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 508 transitions. Word has length 162 [2020-10-23 20:08:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:08:53,367 INFO L481 AbstractCegarLoop]: Abstraction has 454 states and 508 transitions. [2020-10-23 20:08:53,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:08:53,368 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 508 transitions. [2020-10-23 20:08:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:08:53,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:08:53,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:08:53,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:08:53,372 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 20:08:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:08:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1647473693, now seen corresponding path program 1 times [2020-10-23 20:08:53,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:08:53,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915431540] [2020-10-23 20:08:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:08:53,379 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:08:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:53,862 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:08:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:08:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:08:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:08:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:08:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:08:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:54,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:08:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:54,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:08:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:08:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:08:54,103 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 20:08:54,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915431540] [2020-10-23 20:08:54,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:08:54,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:08:54,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550848905] [2020-10-23 20:08:54,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:08:54,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:08:54,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:08:54,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:08:54,108 INFO L87 Difference]: Start difference. First operand 454 states and 508 transitions. Second operand 14 states. [2020-10-23 20:08:54,833 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:08:55,378 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:08:55,800 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:08:56,198 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:08:56,622 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:08:57,009 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:08:57,928 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:08:59,394 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:08:59,865 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:00,478 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:01,086 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:09:01,501 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:09:01,943 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:02,387 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:02,796 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:03,230 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:09:03,893 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:04,539 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:09:05,067 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:05,496 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:08,041 INFO L93 Difference]: Finished difference Result 1557 states and 1902 transitions. [2020-10-23 20:09:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:09:08,046 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2020-10-23 20:09:08,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:08,057 INFO L225 Difference]: With dead ends: 1557 [2020-10-23 20:09:08,057 INFO L226 Difference]: Without dead ends: 1218 [2020-10-23 20:09:08,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:09:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-10-23 20:09:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1071. [2020-10-23 20:09:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-10-23 20:09:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1239 transitions. [2020-10-23 20:09:08,572 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1239 transitions. Word has length 167 [2020-10-23 20:09:08,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:08,574 INFO L481 AbstractCegarLoop]: Abstraction has 1071 states and 1239 transitions. [2020-10-23 20:09:08,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:09:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1239 transitions. [2020-10-23 20:09:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 20:09:08,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:08,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:09:08,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:09:08,585 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 20:09:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash 274958126, now seen corresponding path program 1 times [2020-10-23 20:09:08,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:08,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039492146] [2020-10-23 20:09:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:08,592 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:08,968 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:09:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:09:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:09:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 20:09:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:09,143 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 20:09:09,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039492146] [2020-10-23 20:09:09,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:09,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:09:09,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807769686] [2020-10-23 20:09:09,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:09:09,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:09:09,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:09:09,151 INFO L87 Difference]: Start difference. First operand 1071 states and 1239 transitions. Second operand 6 states. [2020-10-23 20:09:10,061 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:09:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:11,612 INFO L93 Difference]: Finished difference Result 1745 states and 2104 transitions. [2020-10-23 20:09:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:09:11,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-23 20:09:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:11,619 INFO L225 Difference]: With dead ends: 1745 [2020-10-23 20:09:11,620 INFO L226 Difference]: Without dead ends: 789 [2020-10-23 20:09:11,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:09:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-10-23 20:09:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 686. [2020-10-23 20:09:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-10-23 20:09:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 745 transitions. [2020-10-23 20:09:11,991 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 745 transitions. Word has length 172 [2020-10-23 20:09:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:11,992 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 745 transitions. [2020-10-23 20:09:11,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:09:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 745 transitions. [2020-10-23 20:09:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 20:09:11,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:11,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:11,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:09:11,998 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 20:09:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:11,999 INFO L82 PathProgramCache]: Analyzing trace with hash -37336186, now seen corresponding path program 1 times [2020-10-23 20:09:11,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:12,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409028621] [2020-10-23 20:09:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:12,175 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:09:12,465 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:09:12,708 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:09:12,981 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:09:13,242 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:09:13,515 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:09:13,769 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:09:14,028 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:09:14,292 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:09:14,535 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:09:14,802 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:09:15,063 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:09:15,325 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:09:15,592 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:09:15,846 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:09:16,110 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:09:16,359 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:09:16,621 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:09:17,117 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:09:17,515 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:09:17,831 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:09:18,170 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:09:18,522 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:09:18,896 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:09:19,227 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:09:19,567 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:09:19,570 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:19,936 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:09:20,291 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:09:20,645 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:09:21,003 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:09:21,354 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:09:21,688 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:09:22,050 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:09:22,398 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:09:22,401 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:25,067 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:25,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:27,773 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:27,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:30,361 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:30,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:33,001 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:33,006 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:35,560 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:35,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:36,692 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:36,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:39,277 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:39,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:41,826 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:41,832 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:41,837 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:44,398 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:09:44,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:46,923 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:09:46,927 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:48,093 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:09:48,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:49,180 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:09:51,682 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:09:51,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:54,297 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:09:56,846 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:09:56,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:59,388 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:09:59,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:59,398 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:00,984 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:10:03,543 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:10:03,547 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:06,150 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:10:06,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:08,687 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:10:08,692 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:11,268 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:10:11,272 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:13,796 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:10:13,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:16,348 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:10:16,352 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:18,955 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:10:18,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:18,963 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:21,444 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:10:23,946 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:23,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:26,485 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:26,489 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:28,994 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:28,998 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:31,443 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:31,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:34,029 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:10:34,036 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:36,145 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:38,692 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:38,695 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:38,699 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:39,100 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:39,500 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:39,905 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:40,301 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:40,702 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:41,093 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:41,497 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:41,871 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:41,873 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:44,471 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:47,152 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:10:47,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:49,153 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:10:49,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:51,709 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:51,713 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:54,376 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:10:54,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:56,970 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:56,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:59,620 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:02,197 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:02,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:02,205 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:02,618 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:03,026 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:03,452 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:03,859 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:04,260 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:04,641 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:05,045 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:05,456 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:11:05,458 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:08,073 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:11:10,733 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:11:10,736 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:12,460 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:12,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:15,120 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:15,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:17,668 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:11:17,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:19,714 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:22,360 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:11:22,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:25,081 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:25,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:25,090 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:27,785 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:27,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:30,511 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:30,514 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:33,178 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:33,181 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:35,867 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:35,871 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:38,603 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:38,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:41,256 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:41,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:43,888 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:43,891 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:46,534 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:46,538 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:46,541 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:49,179 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:11:49,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:51,809 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:11:51,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:54,283 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:11:54,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:57,003 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:11:59,704 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:11:59,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:02,387 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:12:04,987 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:12:07,632 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:12:07,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:07,638 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:10,307 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:12:10,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:12,545 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:12:12,550 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:14,715 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:12:14,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:17,400 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:12:17,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:19,656 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:12:19,659 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:22,573 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:12:22,576 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:25,316 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:12:25,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:28,071 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:12:28,075 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:28,080 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:28,505 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:12:28,924 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:12:29,331 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:12:29,714 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:12:30,149 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:12:30,590 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:12:31,017 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:12:31,446 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:12:31,448 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:34,152 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:12:34,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:36,354 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:12:39,048 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:12:39,052 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:41,769 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:12:41,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:44,458 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:12:47,125 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:12:47,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:49,792 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:12:49,796 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:52,381 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:12:52,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:12:52,388 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:12:55,155 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:12:57,901 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:12:57,907 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:00,324 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:00,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:03,062 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:13:05,833 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:05,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:08,546 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:13:08,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:11,367 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:11,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:14,195 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:14,201 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:13:16,942 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:13:16,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:19,729 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:19,733 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:22,449 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:13:22,453 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:25,243 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:25,248 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:27,777 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:27,780 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:30,379 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:13:33,031 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:13:35,652 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:13:35,655 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:13:35,657 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:13:36,054 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:13:36,446 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:13:36,840 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:13:37,232 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:13:37,621 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:13:38,010 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:13:38,399 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:13:38,792 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:13:38,794 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:13:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:13:39,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:13:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:13:39,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:13:39,957 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:13:39,958 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:13:39,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:13:39,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:13:39 BoogieIcfgContainer [2020-10-23 20:13:39,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:13:39,997 INFO L168 Benchmark]: Toolchain (without parser) took 303684.33 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 127.0 MB in the beginning and 425.3 MB in the end (delta: -298.3 MB). Peak memory consumption was 204.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:13:39,997 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory was 104.6 MB in the beginning and 104.5 MB in the end (delta: 71.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:13:39,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.04 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 105.3 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:13:39,999 INFO L168 Benchmark]: Boogie Preprocessor took 167.90 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 101.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:13:40,000 INFO L168 Benchmark]: RCFGBuilder took 1487.69 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 127.7 MB in the end (delta: -26.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:13:40,005 INFO L168 Benchmark]: TraceAbstraction took 301291.31 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 127.2 MB in the beginning and 425.3 MB in the end (delta: -298.1 MB). Peak memory consumption was 203.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:13:40,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory was 104.6 MB in the beginning and 104.5 MB in the end (delta: 71.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 719.04 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 105.3 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 167.90 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 101.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1487.69 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 127.7 MB in the end (delta: -26.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 301291.31 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 127.2 MB in the beginning and 425.3 MB in the end (delta: -298.1 MB). Peak memory consumption was 203.7 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: [L118] int cleanupTimeShifts = 4; [L223] int waterLevel = 1; [L224] int methaneLevelCritical = 0; [L481] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L682] int pumpRunning = 0; [L683] int systemActive = 1; [L196] int retValue_acc ; [L197] int tmp ; [L201] FCALL select_helpers() [L202] FCALL select_features() [L203] CALL, EXPR valid_product() [L100] int retValue_acc ; [L103] retValue_acc = 1 [L104] return (retValue_acc); [L203] RET, EXPR valid_product() [L203] tmp = valid_product() [L205] COND TRUE \read(tmp) [L207] FCALL setup() [L208] CALL runTest() [L190] CALL test() [L901] int splverifierCounter ; [L902] int tmp ; [L903] int tmp___0 ; [L904] int tmp___1 ; [L905] int tmp___2 ; [L908] splverifierCounter = 0 [L910] COND TRUE 1 [L912] COND TRUE splverifierCounter < 4 [L918] tmp = __VERIFIER_nondet_int() [L920] COND TRUE \read(tmp) [L922] CALL waterRise() [L241] COND TRUE waterLevel < 2 [L242] waterLevel = waterLevel + 1 [L922] RET waterRise() [L928] tmp___0 = __VERIFIER_nondet_int() [L930] COND FALSE !(\read(tmp___0)) [L938] tmp___2 = __VERIFIER_nondet_int() [L940] COND FALSE !(\read(tmp___2)) [L946] tmp___1 = __VERIFIER_nondet_int() [L948] COND TRUE \read(tmp___1) [L950] CALL stopSystem() [L880] COND FALSE !(\read(pumpRunning)) [L887] systemActive = 0 [L950] RET stopSystem() [L957] CALL timeShift() [L689] COND FALSE !(\read(pumpRunning)) [L696] COND FALSE !(\read(systemActive)) [L704] CALL __utac_acc__Specification4_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR getWaterLevel() [L294] int retValue_acc ; [L297] retValue_acc = waterLevel [L298] return (retValue_acc); [L51] RET, EXPR getWaterLevel() [L51] tmp = getWaterLevel() [L53] COND FALSE !(tmp == 0) [L704] RET __utac_acc__Specification4_spec__1() [L957] RET timeShift() [L910] COND TRUE 1 [L912] COND TRUE splverifierCounter < 4 [L918] tmp = __VERIFIER_nondet_int() [L920] COND TRUE \read(tmp) [L922] CALL waterRise() [L241] COND TRUE waterLevel < 2 [L242] waterLevel = waterLevel + 1 [L922] RET waterRise() [L928] tmp___0 = __VERIFIER_nondet_int() [L930] COND FALSE !(\read(tmp___0)) [L938] tmp___2 = __VERIFIER_nondet_int() [L940] COND FALSE !(\read(tmp___2)) [L946] tmp___1 = __VERIFIER_nondet_int() [L948] COND FALSE !(\read(tmp___1)) [L957] CALL timeShift() [L689] COND FALSE !(\read(pumpRunning)) [L696] COND FALSE !(\read(systemActive)) [L704] CALL __utac_acc__Specification4_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR getWaterLevel() [L294] int retValue_acc ; [L297] retValue_acc = waterLevel [L298] return (retValue_acc); [L51] RET, EXPR getWaterLevel() [L51] tmp = getWaterLevel() [L53] COND TRUE tmp == 0 [L55] CALL, EXPR isPumpRunning() [L813] int retValue_acc ; [L816] retValue_acc = pumpRunning [L817] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L113] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product32.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 647 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 301.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 27.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1199 SDtfs, 1944 SDslu, 2376 SDs, 0 SdLazy, 4745 SolverSat, 682 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1071occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 428 StatesRemovedByMinimization, 5 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...