/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:06:46,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:06:46,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:06:46,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:06:46,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:06:46,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:06:46,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:06:46,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:06:46,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:06:46,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:06:46,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:06:46,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:06:46,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:06:46,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:06:46,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:06:46,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:06:46,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:06:46,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:06:46,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:06:46,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:06:46,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:06:46,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:06:46,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:06:46,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:06:46,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:06:46,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:06:46,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:06:46,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:06:46,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:06:46,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:06:46,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:06:46,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:06:46,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:06:46,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:06:46,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:06:46,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:06:46,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:06:46,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:06:46,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:06:46,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:06:46,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:06:46,481 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 20:06:46,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:06:46,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:06:46,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:06:46,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:06:46,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:06:46,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:06:46,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:06:46,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:06:46,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:06:46,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:06:46,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:06:46,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:06:46,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:06:46,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:06:46,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:06:46,503 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:06:46,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:06:46,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:06:46,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:06:46,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:06:46,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:06:46,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:06:46,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:06:46,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:06:47,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:06:47,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:06:47,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:06:47,029 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:06:47,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product28.cil.c [2020-10-23 20:06:47,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5458f05fd/e794985c4a5742fc97b9d29b63d0387f/FLAG527fa7829 [2020-10-23 20:06:47,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:06:48,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product28.cil.c [2020-10-23 20:06:48,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5458f05fd/e794985c4a5742fc97b9d29b63d0387f/FLAG527fa7829 [2020-10-23 20:06:48,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5458f05fd/e794985c4a5742fc97b9d29b63d0387f [2020-10-23 20:06:48,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:06:48,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:06:48,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:06:48,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:06:48,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:06:48,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:06:48" (1/1) ... [2020-10-23 20:06:48,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0b87e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:48, skipping insertion in model container [2020-10-23 20:06:48,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:06:48" (1/1) ... [2020-10-23 20:06:48,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:06:48,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:06:48,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:06:48,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:06:48,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:06:49,031 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:06:49,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49 WrapperNode [2020-10-23 20:06:49,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:06:49,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:06:49,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:06:49,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:06:49,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (1/1) ... [2020-10-23 20:06:49,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (1/1) ... [2020-10-23 20:06:49,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (1/1) ... [2020-10-23 20:06:49,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (1/1) ... [2020-10-23 20:06:49,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (1/1) ... [2020-10-23 20:06:49,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (1/1) ... [2020-10-23 20:06:49,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (1/1) ... [2020-10-23 20:06:49,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:06:49,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:06:49,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:06:49,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:06:49,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (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 20:06:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:06:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:06:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:06:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:06:49,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:06:49,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:06:49,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:06:49,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:06:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:06:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:06:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:06:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:06:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:06:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:06:49,361 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:06:49,361 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:06:49,362 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:06:49,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:06:49,363 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:06:49,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:06:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:06:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:06:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:06:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:06:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:06:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:06:49,367 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:06:49,367 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:06:49,367 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:06:49,367 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:06:49,367 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:06:49,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:06:49,368 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:06:49,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:06:49,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:06:49,369 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:06:49,369 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:06:49,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:06:49,369 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:06:49,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:06:49,370 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:06:49,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:06:49,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:06:49,370 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:06:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:06:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:06:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:06:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:06:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:06:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:06:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:06:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:06:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:06:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:06:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:06:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:06:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:06:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:06:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:06:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:06:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:06:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:06:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:06:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:06:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:06:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:06:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:06:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:06:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:06:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:06:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:06:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:06:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:06:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:06:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:06:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:06:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:06:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:06:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:06:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:06:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:06:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:06:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:06:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 20:06:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:06:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:06:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:06:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:06:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:06:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:06:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:06:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:06:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:06:49,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:06:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:06:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:06:51,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:06:51,058 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:06:51,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:06:51 BoogieIcfgContainer [2020-10-23 20:06:51,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:06:51,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:06:51,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:06:51,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:06:51,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:06:48" (1/3) ... [2020-10-23 20:06:51,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbda622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:06:51, skipping insertion in model container [2020-10-23 20:06:51,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:49" (2/3) ... [2020-10-23 20:06:51,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbda622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:06:51, skipping insertion in model container [2020-10-23 20:06:51,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:06:51" (3/3) ... [2020-10-23 20:06:51,074 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product28.cil.c [2020-10-23 20:06:51,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:06:51,097 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:06:51,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:06:51,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:06:51,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:06:51,145 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:06:51,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:06:51,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:06:51,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:06:51,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:06:51,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:06:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states. [2020-10-23 20:06:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:06:51,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:06:51,197 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 20:06:51,198 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 20:06:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:06:51,210 INFO L82 PathProgramCache]: Analyzing trace with hash 960028778, now seen corresponding path program 1 times [2020-10-23 20:06:51,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:06:51,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341115247] [2020-10-23 20:06:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:06:51,338 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:06:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,284 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:06:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:06:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:06:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:06:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:06:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:06:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:06:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:06:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:52,496 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 20:06:52,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341115247] [2020-10-23 20:06:52,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:06:52,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:06:52,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754577632] [2020-10-23 20:06:52,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:06:52,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:06:52,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:06:52,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:06:52,533 INFO L87 Difference]: Start difference. First operand 294 states. Second operand 3 states. [2020-10-23 20:06:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:06:54,453 INFO L93 Difference]: Finished difference Result 446 states and 533 transitions. [2020-10-23 20:06:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:06:54,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:06:54,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:06:54,476 INFO L225 Difference]: With dead ends: 446 [2020-10-23 20:06:54,476 INFO L226 Difference]: Without dead ends: 282 [2020-10-23 20:06:54,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:06:54,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-23 20:06:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 240. [2020-10-23 20:06:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-23 20:06:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 259 transitions. [2020-10-23 20:06:54,710 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 259 transitions. Word has length 148 [2020-10-23 20:06:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:06:54,711 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 259 transitions. [2020-10-23 20:06:54,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:06:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 259 transitions. [2020-10-23 20:06:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:06:54,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:06:54,718 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 20:06:54,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:06:54,719 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 20:06:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:06:54,720 INFO L82 PathProgramCache]: Analyzing trace with hash 693824388, now seen corresponding path program 1 times [2020-10-23 20:06:54,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:06:54,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681571756] [2020-10-23 20:06:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:06:54,727 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:06:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,269 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:06:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:06:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:06:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:06:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:06:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:06:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:06:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:06:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:55,453 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 20:06:55,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681571756] [2020-10-23 20:06:55,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:06:55,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:06:55,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376415883] [2020-10-23 20:06:55,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:06:55,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:06:55,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:06:55,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:06:55,460 INFO L87 Difference]: Start difference. First operand 240 states and 259 transitions. Second operand 4 states. [2020-10-23 20:06:56,372 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:06:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:06:57,541 INFO L93 Difference]: Finished difference Result 350 states and 392 transitions. [2020-10-23 20:06:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:06:57,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:06:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:06:57,548 INFO L225 Difference]: With dead ends: 350 [2020-10-23 20:06:57,548 INFO L226 Difference]: Without dead ends: 265 [2020-10-23 20:06:57,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:06:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-23 20:06:57,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 230. [2020-10-23 20:06:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-23 20:06:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 246 transitions. [2020-10-23 20:06:57,648 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 246 transitions. Word has length 149 [2020-10-23 20:06:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:06:57,649 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 246 transitions. [2020-10-23 20:06:57,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:06:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 246 transitions. [2020-10-23 20:06:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:06:57,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:06:57,653 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 20:06:57,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:06:57,654 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 20:06:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:06:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1313624532, now seen corresponding path program 1 times [2020-10-23 20:06:57,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:06:57,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620367638] [2020-10-23 20:06:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:06:57,660 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:06:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,285 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:06:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:06:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:06:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:06:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:06:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:06:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:06:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:06:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:06:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:58,485 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 20:06:58,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620367638] [2020-10-23 20:06:58,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:06:58,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:06:58,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599908989] [2020-10-23 20:06:58,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:06:58,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:06:58,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:06:58,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:06:58,493 INFO L87 Difference]: Start difference. First operand 230 states and 246 transitions. Second operand 10 states. [2020-10-23 20:06:59,411 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:06:59,954 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:07:00,423 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:07:00,841 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:07:01,287 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:07:01,700 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:07:03,112 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:07:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:07:05,997 INFO L93 Difference]: Finished difference Result 612 states and 713 transitions. [2020-10-23 20:07:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:07:05,998 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:07:06,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:07:06,011 INFO L225 Difference]: With dead ends: 612 [2020-10-23 20:07:06,012 INFO L226 Difference]: Without dead ends: 497 [2020-10-23 20:07:06,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:07:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-23 20:07:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 404. [2020-10-23 20:07:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-23 20:07:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 450 transitions. [2020-10-23 20:07:06,283 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 450 transitions. Word has length 162 [2020-10-23 20:07:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:07:06,284 INFO L481 AbstractCegarLoop]: Abstraction has 404 states and 450 transitions. [2020-10-23 20:07:06,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:07:06,285 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 450 transitions. [2020-10-23 20:07:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:07:06,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:07:06,289 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 20:07:06,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:07:06,290 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 20:07:06,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:07:06,290 INFO L82 PathProgramCache]: Analyzing trace with hash -447330968, now seen corresponding path program 1 times [2020-10-23 20:07:06,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:07:06,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681056202] [2020-10-23 20:07:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:07:06,295 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:07:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:06,831 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:07:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:07:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:07:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:07:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:07:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:07:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:07:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:07:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:07:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:07,163 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 20:07:07,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681056202] [2020-10-23 20:07:07,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:07:07,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:07:07,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728266766] [2020-10-23 20:07:07,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:07:07,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:07:07,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:07:07,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:07:07,170 INFO L87 Difference]: Start difference. First operand 404 states and 450 transitions. Second operand 14 states. [2020-10-23 20:07:07,945 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:07:08,533 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:07:09,022 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:07:09,480 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:07:09,929 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:07:10,359 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:07:11,379 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:07:12,893 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:07:13,374 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:07:13,984 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:07:14,472 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:07:14,917 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:07:15,331 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:07:15,769 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:07:16,189 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:07:16,639 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:07:17,239 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:07:17,776 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:07:18,257 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:07:18,700 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:07:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:07:21,014 INFO L93 Difference]: Finished difference Result 1345 states and 1652 transitions. [2020-10-23 20:07:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:07:21,016 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2020-10-23 20:07:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:07:21,027 INFO L225 Difference]: With dead ends: 1345 [2020-10-23 20:07:21,028 INFO L226 Difference]: Without dead ends: 1056 [2020-10-23 20:07:21,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:07:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-23 20:07:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 917. [2020-10-23 20:07:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-10-23 20:07:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1059 transitions. [2020-10-23 20:07:21,526 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1059 transitions. Word has length 167 [2020-10-23 20:07:21,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:07:21,527 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1059 transitions. [2020-10-23 20:07:21,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:07:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1059 transitions. [2020-10-23 20:07:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 20:07:21,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:07:21,532 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 20:07:21,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:07:21,533 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 20:07:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:07:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1244607301, now seen corresponding path program 1 times [2020-10-23 20:07:21,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:07:21,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252491008] [2020-10-23 20:07:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:07:21,539 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:07:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:21,996 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:07:21,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:07:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:07:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:07:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:07:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:07:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:07:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:07:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:07:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 20:07:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:07:22,213 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 20:07:22,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252491008] [2020-10-23 20:07:22,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:07:22,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:07:22,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887954040] [2020-10-23 20:07:22,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:07:22,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:07:22,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:07:22,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:07:22,222 INFO L87 Difference]: Start difference. First operand 917 states and 1059 transitions. Second operand 6 states. [2020-10-23 20:07:23,020 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:07:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:07:24,634 INFO L93 Difference]: Finished difference Result 1561 states and 1880 transitions. [2020-10-23 20:07:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 20:07:24,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-23 20:07:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:07:24,641 INFO L225 Difference]: With dead ends: 1561 [2020-10-23 20:07:24,641 INFO L226 Difference]: Without dead ends: 759 [2020-10-23 20:07:24,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:07:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-23 20:07:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 656. [2020-10-23 20:07:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-23 20:07:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 715 transitions. [2020-10-23 20:07:25,029 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 715 transitions. Word has length 172 [2020-10-23 20:07:25,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:07:25,030 INFO L481 AbstractCegarLoop]: Abstraction has 656 states and 715 transitions. [2020-10-23 20:07:25,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:07:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 715 transitions. [2020-10-23 20:07:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 20:07:25,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:07:25,040 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 20:07:25,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:07:25,040 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 20:07:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:07:25,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2055189981, now seen corresponding path program 1 times [2020-10-23 20:07:25,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:07:25,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968490404] [2020-10-23 20:07:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:07:25,255 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:07:25,576 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:07:25,826 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:07:26,106 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:07:26,372 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:07:26,635 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:07:26,905 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:07:27,197 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:07:27,507 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:07:27,810 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:07:28,075 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:07:28,338 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:07:28,604 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:07:28,886 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:07:29,161 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:07:29,455 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:07:29,741 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:07:30,010 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:07:32,981 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:33,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:35,759 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:07:35,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:38,394 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:38,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:40,325 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:07:40,331 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:42,931 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:42,938 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:44,282 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:07:44,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:46,883 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:46,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:48,146 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:07:48,162 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:48,540 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:07:48,960 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:49,343 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:49,745 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:50,130 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:50,517 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:50,915 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:07:51,335 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:07:51,338 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:52,527 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:07:52,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:53,851 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:07:53,863 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:56,472 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:07:56,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:59,043 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:07:59,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:01,646 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:08:01,652 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:04,173 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:08:04,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:06,703 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:08:06,708 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:09,239 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:08:09,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:09,248 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:11,814 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:14,460 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:08:14,466 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:17,030 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:17,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:19,619 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:08:19,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:22,269 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:08:22,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:24,810 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:24,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:27,351 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:27,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:29,025 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:08:29,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:29,033 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:31,731 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:31,737 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:34,394 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:34,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:37,149 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:37,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:39,823 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:08:39,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:42,492 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:08:45,172 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:08:45,176 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:47,855 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:08:47,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:50,586 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:08:50,590 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:50,595 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:50,989 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:51,372 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:51,803 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:52,217 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:08:52,639 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:08:53,109 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:08:53,512 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:53,891 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:53,894 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:54,316 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:54,739 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:08:55,230 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:55,647 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:56,058 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:08:56,439 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:56,863 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:08:57,292 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:08:57,297 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:57,745 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:08:58,203 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:08:58,664 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:59,092 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:59,498 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:08:59,934 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:09:00,370 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:09:00,800 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:09:00,802 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:02,227 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:02,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:04,921 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:09:04,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:07,619 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:09:10,356 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:12,201 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:14,930 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:14,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:17,621 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:09:17,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:20,205 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:09:20,209 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:20,212 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:22,778 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-23 20:09:22,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:25,329 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:09:27,883 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:09:27,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:30,693 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:09:33,274 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:09:35,900 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:09:35,904 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:38,526 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:09:38,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:41,101 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:09:41,108 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:43,725 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:43,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:46,343 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:46,347 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:48,963 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:51,593 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:53,034 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:53,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:55,569 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:58,159 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:09:58,162 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:00,700 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:10:00,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:00,706 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:03,269 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:03,272 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:05,791 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:10:05,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:07,505 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:07,508 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:10,095 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:10,098 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:12,709 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:12,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:15,312 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:10:17,841 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:17,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:20,370 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:20,379 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:20,756 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:10:21,137 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:21,523 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:21,912 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:22,311 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:22,707 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:10:23,094 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:10:23,485 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:10:23,489 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:26,137 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:26,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:28,796 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:31,477 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:31,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:34,085 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:34,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:36,695 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:36,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:39,276 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:39,279 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:41,901 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:41,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:44,520 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:44,524 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:44,527 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:44,921 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:45,326 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:45,728 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:46,128 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:46,523 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:46,924 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:47,322 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:47,715 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:10:47,717 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:50,349 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:53,033 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:55,657 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:55,664 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:58,317 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:10:58,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:00,361 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:00,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:03,092 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:03,096 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:05,873 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:08,619 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:08,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:08,625 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:11,381 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:11,386 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:14,083 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:14,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:16,872 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:19,609 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:19,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:22,283 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:22,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:25,026 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:25,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:28,260 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:11:28,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:31,034 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:11:31,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:31,039 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:33,769 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:11:33,772 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:36,500 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:11:36,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:39,181 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:11:39,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:41,847 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:11:41,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:44,480 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:11:44,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:47,132 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:11:47,136 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:49,800 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:11:49,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:52,525 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:11:52,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:11:52,530 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:11:53,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:11:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:11:53,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:11:53,874 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:11:53,875 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:11:53,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:11:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:11:53 BoogieIcfgContainer [2020-10-23 20:11:53,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:11:53,935 INFO L168 Benchmark]: Toolchain (without parser) took 305610.17 ms. Allocated memory was 151.0 MB in the beginning and 497.0 MB in the end (delta: 346.0 MB). Free memory was 126.9 MB in the beginning and 419.8 MB in the end (delta: -292.8 MB). Peak memory consumption was 317.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:53,936 INFO L168 Benchmark]: CDTParser took 1.26 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:11:53,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.32 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 105.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:53,939 INFO L168 Benchmark]: Boogie Preprocessor took 185.39 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 101.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:53,939 INFO L168 Benchmark]: RCFGBuilder took 1835.19 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 88.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:53,945 INFO L168 Benchmark]: TraceAbstraction took 302867.22 ms. Allocated memory was 151.0 MB in the beginning and 497.0 MB in the end (delta: 346.0 MB). Free memory was 87.9 MB in the beginning and 419.8 MB in the end (delta: -331.9 MB). Peak memory consumption was 278.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:53,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 696.32 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 105.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 185.39 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 101.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1835.19 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 88.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 302867.22 ms. Allocated memory was 151.0 MB in the beginning and 497.0 MB in the end (delta: 346.0 MB). Free memory was 87.9 MB in the beginning and 419.8 MB in the end (delta: -331.9 MB). Peak memory consumption was 278.0 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: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L493] int pumpRunning = 0; [L494] int systemActive = 1; [L688] int waterLevel = 1; [L689] int methaneLevelCritical = 0; [L777] int cleanupTimeShifts = 4; [L851] int retValue_acc ; [L852] int tmp ; [L856] FCALL select_helpers() [L857] FCALL select_features() [L858] CALL, EXPR valid_product() [L474] int retValue_acc ; [L477] retValue_acc = 1 [L478] return (retValue_acc); [L858] RET, EXPR valid_product() [L858] tmp = valid_product() [L860] COND TRUE \read(tmp) [L862] FCALL setup() [L863] CALL runTest() [L845] CALL test() [L875] int splverifierCounter ; [L876] int tmp ; [L877] int tmp___0 ; [L878] int tmp___1 ; [L879] int tmp___2 ; [L882] splverifierCounter = 0 [L884] COND TRUE 1 [L886] COND TRUE splverifierCounter < 4 [L892] tmp = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp) [L896] CALL waterRise() [L706] COND TRUE waterLevel < 2 [L707] waterLevel = waterLevel + 1 [L896] RET waterRise() [L902] tmp___0 = __VERIFIER_nondet_int() [L904] COND FALSE !(\read(tmp___0)) [L912] tmp___2 = __VERIFIER_nondet_int() [L914] COND FALSE !(\read(tmp___2)) [L920] tmp___1 = __VERIFIER_nondet_int() [L922] COND TRUE \read(tmp___1) [L924] CALL stopSystem() [L666] COND FALSE !(\read(pumpRunning)) [L673] systemActive = 0 [L924] RET stopSystem() [L931] CALL timeShift() [L500] COND FALSE !(\read(pumpRunning)) [L507] COND FALSE !(\read(systemActive)) [L515] CALL __utac_acc__Specification4_spec__1() [L420] int tmp ; [L421] int tmp___0 ; [L425] CALL, EXPR getWaterLevel() [L759] int retValue_acc ; [L762] retValue_acc = waterLevel [L763] return (retValue_acc); [L425] RET, EXPR getWaterLevel() [L425] tmp = getWaterLevel() [L427] COND FALSE !(tmp == 0) [L515] RET __utac_acc__Specification4_spec__1() [L931] RET timeShift() [L884] COND TRUE 1 [L886] COND TRUE splverifierCounter < 4 [L892] tmp = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp) [L896] CALL waterRise() [L706] COND TRUE waterLevel < 2 [L707] waterLevel = waterLevel + 1 [L896] RET waterRise() [L902] tmp___0 = __VERIFIER_nondet_int() [L904] COND FALSE !(\read(tmp___0)) [L912] tmp___2 = __VERIFIER_nondet_int() [L914] COND FALSE !(\read(tmp___2)) [L920] tmp___1 = __VERIFIER_nondet_int() [L922] COND FALSE !(\read(tmp___1)) [L931] CALL timeShift() [L500] COND FALSE !(\read(pumpRunning)) [L507] COND FALSE !(\read(systemActive)) [L515] CALL __utac_acc__Specification4_spec__1() [L420] int tmp ; [L421] int tmp___0 ; [L425] CALL, EXPR getWaterLevel() [L759] int retValue_acc ; [L762] retValue_acc = waterLevel [L763] return (retValue_acc); [L425] RET, EXPR getWaterLevel() [L425] tmp = getWaterLevel() [L427] COND TRUE tmp == 0 [L429] CALL, EXPR isPumpRunning() [L599] int retValue_acc ; [L602] retValue_acc = pumpRunning [L603] return (retValue_acc); [L429] RET, EXPR isPumpRunning() [L429] tmp___0 = isPumpRunning() [L431] COND TRUE \read(tmp___0) [L433] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product28.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 635 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 302.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 27.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1108 SDtfs, 1807 SDslu, 2219 SDs, 0 SdLazy, 4030 SolverSat, 624 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=917occurred 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, 412 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! Received shutdown request...