/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:05:26,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:05:26,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:05:26,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:05:26,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:05:26,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:05:26,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:05:26,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:05:26,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:05:26,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:05:26,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:05:26,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:05:26,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:05:26,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:05:26,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:05:26,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:05:26,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:05:26,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:05:26,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:05:26,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:05:26,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:05:26,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:05:26,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:05:26,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:05:26,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:05:26,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:05:26,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:05:26,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:05:26,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:05:26,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:05:26,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:05:26,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:05:26,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:05:26,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:05:26,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:05:26,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:05:26,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:05:26,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:05:26,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:05:26,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:05:26,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:05:26,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:05:26,391 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:05:26,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:05:26,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:05:26,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:05:26,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:05:26,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:05:26,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:05:26,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:05:26,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:05:26,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:05:26,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:05:26,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:05:26,396 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:05:26,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:05:26,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:05:26,397 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:05:26,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:05:26,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:05:26,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:05:26,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:05:26,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:05:26,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:05:26,399 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:05:26,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:05:26,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:05:26,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:05:26,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:05:26,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:05:26,783 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:05:26,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2021-02-22 01:05:26,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3f4f43b/313d5d187267464bbc2ea2524f082a58/FLAG9dd3bbf24 [2021-02-22 01:05:27,498 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:05:27,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2021-02-22 01:05:27,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3f4f43b/313d5d187267464bbc2ea2524f082a58/FLAG9dd3bbf24 [2021-02-22 01:05:27,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3f4f43b/313d5d187267464bbc2ea2524f082a58 [2021-02-22 01:05:27,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:05:27,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:05:27,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:27,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:05:27,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:05:27,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:27" (1/1) ... [2021-02-22 01:05:27,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd908d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:27, skipping insertion in model container [2021-02-22 01:05:27,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:27" (1/1) ... [2021-02-22 01:05:27,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:05:27,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:05:28,189 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c[15798,15811] [2021-02-22 01:05:28,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:28,222 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:05:28,363 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c[15798,15811] [2021-02-22 01:05:28,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:28,414 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:05:28,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28 WrapperNode [2021-02-22 01:05:28,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:28,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:05:28,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:05:28,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:05:28,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (1/1) ... [2021-02-22 01:05:28,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (1/1) ... [2021-02-22 01:05:28,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (1/1) ... [2021-02-22 01:05:28,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (1/1) ... [2021-02-22 01:05:28,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (1/1) ... [2021-02-22 01:05:28,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (1/1) ... [2021-02-22 01:05:28,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (1/1) ... [2021-02-22 01:05:28,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:05:28,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:05:28,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:05:28,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:05:28,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (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 [2021-02-22 01:05:28,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:05:28,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:05:28,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:05:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:05:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:05:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:05:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:05:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:05:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:05:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:05:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:05:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:05:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:05:28,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:05:28,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:05:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:05:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:05:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:05:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:05:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:05:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:05:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:05:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:05:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:05:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:05:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:05:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:05:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:05:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:05:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:05:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:05:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:05:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:05:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:05:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:05:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:05:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:05:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:05:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:05:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:05:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:05:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:05:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:05:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:05:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:05:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:05:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:05:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:05:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:05:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:05:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:05:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:05:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:05:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:05:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:05:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:05:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:05:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:05:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:05:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:05:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:05:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:05:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:05:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:05:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:05:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:05:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:05:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:05:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:05:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:05:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:05:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:05:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:05:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:05:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:05:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:05:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:05:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:05:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:05:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:05:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:05:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:05:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:05:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:05:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:05:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:05:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:05:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:05:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:05:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:05:29,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:05:29,844 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:05:29,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:29 BoogieIcfgContainer [2021-02-22 01:05:29,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:05:29,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:05:29,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:05:29,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:05:29,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:05:27" (1/3) ... [2021-02-22 01:05:29,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e523d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:29, skipping insertion in model container [2021-02-22 01:05:29,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:28" (2/3) ... [2021-02-22 01:05:29,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e523d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:29, skipping insertion in model container [2021-02-22 01:05:29,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:29" (3/3) ... [2021-02-22 01:05:29,857 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2021-02-22 01:05:29,864 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:05:29,870 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:05:29,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:05:29,917 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:05:29,917 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:05:29,917 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:05:29,918 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:05:29,918 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:05:29,918 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:05:29,918 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:05:29,918 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:05:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2021-02-22 01:05:29,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:05:29,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:29,965 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] [2021-02-22 01:05:29,966 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:29,972 INFO L82 PathProgramCache]: Analyzing trace with hash -132092640, now seen corresponding path program 1 times [2021-02-22 01:05:29,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:29,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943450787] [2021-02-22 01:05:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:30,066 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,766 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:05:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:05:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:05:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:30,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:30,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:30,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943450787] [2021-02-22 01:05:30,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:30,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:05:30,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724773409] [2021-02-22 01:05:30,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:05:30,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:05:30,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:30,954 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 3 states. [2021-02-22 01:05:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:32,843 INFO L93 Difference]: Finished difference Result 576 states and 679 transitions. [2021-02-22 01:05:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:05:32,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:05:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:32,879 INFO L225 Difference]: With dead ends: 576 [2021-02-22 01:05:32,879 INFO L226 Difference]: Without dead ends: 350 [2021-02-22 01:05:32,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-02-22 01:05:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 304. [2021-02-22 01:05:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2021-02-22 01:05:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 331 transitions. [2021-02-22 01:05:33,114 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 331 transitions. Word has length 158 [2021-02-22 01:05:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:33,117 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 331 transitions. [2021-02-22 01:05:33,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:05:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 331 transitions. [2021-02-22 01:05:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:05:33,133 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:33,134 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] [2021-02-22 01:05:33,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:05:33,135 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1542571510, now seen corresponding path program 1 times [2021-02-22 01:05:33,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:33,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88278608] [2021-02-22 01:05:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:33,144 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:33,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,569 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:33,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:05:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:05:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:05:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:33,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:33,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:33,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88278608] [2021-02-22 01:05:33,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:33,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:05:33,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019267290] [2021-02-22 01:05:33,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:05:33,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:33,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:05:33,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:05:33,688 INFO L87 Difference]: Start difference. First operand 304 states and 331 transitions. Second operand 4 states. [2021-02-22 01:05:34,390 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:05:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:35,792 INFO L93 Difference]: Finished difference Result 482 states and 541 transitions. [2021-02-22 01:05:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:05:35,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:05:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:35,798 INFO L225 Difference]: With dead ends: 482 [2021-02-22 01:05:35,798 INFO L226 Difference]: Without dead ends: 333 [2021-02-22 01:05:35,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:05:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-02-22 01:05:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 294. [2021-02-22 01:05:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2021-02-22 01:05:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 318 transitions. [2021-02-22 01:05:35,907 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 318 transitions. Word has length 159 [2021-02-22 01:05:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:35,908 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 318 transitions. [2021-02-22 01:05:35,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:05:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 318 transitions. [2021-02-22 01:05:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:05:35,911 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:35,911 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] [2021-02-22 01:05:35,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:05:35,912 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1968841679, now seen corresponding path program 1 times [2021-02-22 01:05:35,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:35,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136030022] [2021-02-22 01:05:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:35,917 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:36,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:36,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:05:36,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,471 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:05:36,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:05:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:05:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:05:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:05:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:05:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:36,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:36,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:36,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136030022] [2021-02-22 01:05:36,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:36,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:05:36,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586953975] [2021-02-22 01:05:36,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:05:36,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:36,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:05:36,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:05:36,676 INFO L87 Difference]: Start difference. First operand 294 states and 318 transitions. Second operand 10 states. [2021-02-22 01:05:37,276 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:37,706 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:05:38,074 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:05:38,452 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:38,824 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:39,168 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:40,202 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:05:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:43,581 INFO L93 Difference]: Finished difference Result 822 states and 950 transitions. [2021-02-22 01:05:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:05:43,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:05:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:43,587 INFO L225 Difference]: With dead ends: 822 [2021-02-22 01:05:43,588 INFO L226 Difference]: Without dead ends: 643 [2021-02-22 01:05:43,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:05:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-02-22 01:05:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 544. [2021-02-22 01:05:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2021-02-22 01:05:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 607 transitions. [2021-02-22 01:05:43,899 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 607 transitions. Word has length 172 [2021-02-22 01:05:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:43,900 INFO L480 AbstractCegarLoop]: Abstraction has 544 states and 607 transitions. [2021-02-22 01:05:43,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:05:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 607 transitions. [2021-02-22 01:05:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:05:43,905 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:43,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:05:43,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:05:43,906 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:43,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:43,907 INFO L82 PathProgramCache]: Analyzing trace with hash -852185042, now seen corresponding path program 1 times [2021-02-22 01:05:43,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:43,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782642218] [2021-02-22 01:05:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:43,911 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:43,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,344 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:05:44,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:05:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:05:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:05:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:05:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:44,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:44,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:44,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782642218] [2021-02-22 01:05:44,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:44,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:05:44,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530464074] [2021-02-22 01:05:44,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:05:44,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:05:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:05:44,519 INFO L87 Difference]: Start difference. First operand 544 states and 607 transitions. Second operand 9 states. [2021-02-22 01:05:45,089 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:47,336 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:47,760 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:48,195 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:48,707 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:49,011 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:49,384 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:49,749 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:51,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:51,308 INFO L93 Difference]: Finished difference Result 1492 states and 1778 transitions. [2021-02-22 01:05:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:05:51,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:05:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:51,318 INFO L225 Difference]: With dead ends: 1492 [2021-02-22 01:05:51,318 INFO L226 Difference]: Without dead ends: 1063 [2021-02-22 01:05:51,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:05:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-02-22 01:05:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 956. [2021-02-22 01:05:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2021-02-22 01:05:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1090 transitions. [2021-02-22 01:05:51,715 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1090 transitions. Word has length 177 [2021-02-22 01:05:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:51,716 INFO L480 AbstractCegarLoop]: Abstraction has 956 states and 1090 transitions. [2021-02-22 01:05:51,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:05:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1090 transitions. [2021-02-22 01:05:51,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:05:51,722 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:51,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:05:51,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:05:51,722 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:51,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:51,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1409559926, now seen corresponding path program 1 times [2021-02-22 01:05:51,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:51,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520152399] [2021-02-22 01:05:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:51,726 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:51,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:51,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:51,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:51,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:51,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:51,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:51,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:51,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:51,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:51,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:51,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:51,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:51,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:51,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,104 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:05:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:05:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:05:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:05:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-22 01:05:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:52,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:52,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:52,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520152399] [2021-02-22 01:05:52,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:52,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:05:52,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570455076] [2021-02-22 01:05:52,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:05:52,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:05:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:05:52,242 INFO L87 Difference]: Start difference. First operand 956 states and 1090 transitions. Second operand 6 states. [2021-02-22 01:05:52,848 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:55,595 INFO L93 Difference]: Finished difference Result 2136 states and 2549 transitions. [2021-02-22 01:05:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:05:55,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-22 01:05:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:55,611 INFO L225 Difference]: With dead ends: 2136 [2021-02-22 01:05:55,611 INFO L226 Difference]: Without dead ends: 1295 [2021-02-22 01:05:55,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:05:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-02-22 01:05:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1195. [2021-02-22 01:05:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2021-02-22 01:05:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1358 transitions. [2021-02-22 01:05:56,146 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1358 transitions. Word has length 182 [2021-02-22 01:05:56,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:56,147 INFO L480 AbstractCegarLoop]: Abstraction has 1195 states and 1358 transitions. [2021-02-22 01:05:56,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:05:56,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1358 transitions. [2021-02-22 01:05:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:05:56,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:56,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:05:56,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:05:56,154 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:56,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1993496595, now seen corresponding path program 1 times [2021-02-22 01:05:56,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:56,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217924247] [2021-02-22 01:05:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:56,163 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:05:56,257 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:05:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:05:56,348 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:05:56,607 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:05:56,608 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:05:56,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:05:56,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:05:56 BoogieIcfgContainer [2021-02-22 01:05:56,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:05:56,651 INFO L168 Benchmark]: Toolchain (without parser) took 28832.27 ms. Allocated memory was 159.4 MB in the beginning and 714.1 MB in the end (delta: 554.7 MB). Free memory was 134.1 MB in the beginning and 546.2 MB in the end (delta: -412.1 MB). Peak memory consumption was 143.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:56,656 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 159.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:05:56,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.32 ms. Allocated memory is still 159.4 MB. Free memory was 132.9 MB in the beginning and 110.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:56,657 INFO L168 Benchmark]: Boogie Preprocessor took 86.47 ms. Allocated memory is still 159.4 MB. Free memory was 110.9 MB in the beginning and 107.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:56,658 INFO L168 Benchmark]: RCFGBuilder took 1344.83 ms. Allocated memory was 159.4 MB in the beginning and 213.9 MB in the end (delta: 54.5 MB). Free memory was 107.0 MB in the beginning and 140.8 MB in the end (delta: -33.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:56,659 INFO L168 Benchmark]: TraceAbstraction took 26800.33 ms. Allocated memory was 213.9 MB in the beginning and 714.1 MB in the end (delta: 500.2 MB). Free memory was 140.2 MB in the beginning and 546.2 MB in the end (delta: -405.9 MB). Peak memory consumption was 94.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:56,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 159.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 584.32 ms. Allocated memory is still 159.4 MB. Free memory was 132.9 MB in the beginning and 110.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.47 ms. Allocated memory is still 159.4 MB. Free memory was 110.9 MB in the beginning and 107.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1344.83 ms. Allocated memory was 159.4 MB in the beginning and 213.9 MB in the end (delta: 54.5 MB). Free memory was 107.0 MB in the beginning and 140.8 MB in the end (delta: -33.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26800.33 ms. Allocated memory was 213.9 MB in the beginning and 714.1 MB in the end (delta: 500.2 MB). Free memory was 140.2 MB in the beginning and 546.2 MB in the end (delta: -405.9 MB). Peak memory consumption was 94.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L126] int pumpRunning = 0; [L127] int systemActive = 1; [L570] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L917] int cleanupTimeShifts = 4; [L990] int retValue_acc ; [L991] int tmp ; [L995] FCALL select_helpers() [L996] FCALL select_features() [L997] CALL, EXPR valid_product() [L805] int retValue_acc ; [L808] retValue_acc = 1 [L809] return (retValue_acc); [L997] RET, EXPR valid_product() [L997] tmp = valid_product() [L999] COND TRUE \read(tmp) [L1001] FCALL setup() [L1002] CALL runTest() [L984] CALL test() [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 [L58] COND TRUE 1 [L60] COND TRUE splverifierCounter < 4 [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) [L70] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L70] RET waterRise() [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND FALSE !(\read(tmp___2)) [L94] tmp___1 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___1) [L98] CALL stopSystem() [L345] COND FALSE !(\read(pumpRunning)) [L352] systemActive = 0 [L98] RET stopSystem() [L105] CALL timeShift() [L134] COND FALSE !(\read(pumpRunning)) [L141] COND FALSE !(\read(systemActive)) [L149] CALL __utac_acc__Specification3_spec__1() [L368] int tmp ; [L369] int tmp___0 ; [L370] int tmp___1 ; [L374] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L374] RET, EXPR isMethaneLevelCritical() [L374] tmp = isMethaneLevelCritical() [L376] COND FALSE !(\read(tmp)) [L380] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L380] RET, EXPR getWaterLevel() [L380] tmp___0 = getWaterLevel() [L382] COND TRUE tmp___0 == 2 [L384] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] return (retValue_acc); [L384] RET, EXPR isPumpRunning() [L384] tmp___1 = isPumpRunning() [L386] COND FALSE !(\read(tmp___1)) [L390] CALL __automaton_fail() [L771] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 671 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1451 SDtfs, 2471 SDslu, 1698 SDs, 0 SdLazy, 4229 SolverSat, 849 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1195occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 391 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...