/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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:28:32,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:28:32,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:28:32,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:28:32,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:28:32,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:28:32,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:28:32,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:28:32,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:28:32,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:28:32,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:28:32,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:28:32,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:28:32,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:28:32,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:28:32,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:28:32,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:28:32,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:28:32,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:28:32,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:28:32,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:28:32,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:28:32,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:28:32,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:28:32,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:28:32,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:28:32,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:28:32,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:28:32,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:28:32,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:28:32,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:28:32,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:28:32,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:28:32,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:28:32,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:28:32,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:28:32,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:28:32,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:28:32,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:28:32,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:28:32,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:28:32,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:28:32,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:28:32,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:28:32,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:28:32,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:28:32,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:28:32,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:28:32,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:28:32,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:28:32,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:28:32,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:28:32,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:28:32,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:28:32,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:28:32,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:28:32,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:28:32,552 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:28:32,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:28:32,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:28:32,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:28:32,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:28:32,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:28:32,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:28:32,553 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:28:32,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:28:33,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:28:33,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:28:33,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:28:33,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:28:33,032 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:28:33,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2021-02-24 03:28:33,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8840365/ffcf0a13d0294a238907806e21ac03b6/FLAG829a3918e [2021-02-24 03:28:33,856 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:28:33,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2021-02-24 03:28:33,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8840365/ffcf0a13d0294a238907806e21ac03b6/FLAG829a3918e [2021-02-24 03:28:33,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8840365/ffcf0a13d0294a238907806e21ac03b6 [2021-02-24 03:28:33,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:28:33,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:28:33,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:33,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:28:33,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:28:33,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:33" (1/1) ... [2021-02-24 03:28:33,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55881a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:33, skipping insertion in model container [2021-02-24 03:28:33,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:33" (1/1) ... [2021-02-24 03:28:33,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:28:33,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:28:34,312 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_product26.cil.c[14037,14050] [2021-02-24 03:28:34,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:34,353 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:28:34,425 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_product26.cil.c[14037,14050] [2021-02-24 03:28:34,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:34,507 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:28:34,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34 WrapperNode [2021-02-24 03:28:34,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:34,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:28:34,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:28:34,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:28:34,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:28:34,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:28:34,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:28:34,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:28:34,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (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 [2021-02-24 03:28:34,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:28:34,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:28:34,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:28:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:28:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:28:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:28:34,840 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:28:34,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:28:34,841 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:28:34,841 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:28:34,841 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:28:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:28:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:28:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:28:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:28:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:28:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:28:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:28:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:28:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:28:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:28:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:28:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:28:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:28:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:28:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:28:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:28:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:28:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:28:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:28:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:28:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:28:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:28:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:28:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:28:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:28:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:28:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:28:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:28:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:28:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:28:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:28:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:28:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:28:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:28:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:28:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:28:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:28:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:28:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:28:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:28:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:28:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:28:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:28:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:28:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:28:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:28:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:28:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:28:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:28:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:28:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:28:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:28:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:28:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:28:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:28:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:28:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:28:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:28:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:28:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:28:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:28:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:28:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:28:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:28:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:28:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:28:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:28:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:28:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:28:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:28:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:28:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:28:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:28:36,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:28:36,249 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:28:36,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:36 BoogieIcfgContainer [2021-02-24 03:28:36,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:28:36,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:28:36,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:28:36,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:28:36,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:28:33" (1/3) ... [2021-02-24 03:28:36,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634c3d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:36, skipping insertion in model container [2021-02-24 03:28:36,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (2/3) ... [2021-02-24 03:28:36,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634c3d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:36, skipping insertion in model container [2021-02-24 03:28:36,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:36" (3/3) ... [2021-02-24 03:28:36,265 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2021-02-24 03:28:36,272 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:28:36,278 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:28:36,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:28:36,323 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:28:36,324 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:28:36,324 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:28:36,324 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:28:36,324 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:28:36,324 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:28:36,324 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:28:36,325 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:28:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2021-02-24 03:28:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:28:36,369 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:36,370 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] [2021-02-24 03:28:36,371 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:36,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1813095377, now seen corresponding path program 1 times [2021-02-24 03:28:36,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:36,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17500824] [2021-02-24 03:28:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:36,468 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,177 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:28:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:28:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:28:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:37,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17500824] [2021-02-24 03:28:37,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:37,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:28:37,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033856091] [2021-02-24 03:28:37,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:28:37,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:28:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:37,427 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2021-02-24 03:28:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:39,020 INFO L93 Difference]: Finished difference Result 450 states and 533 transitions. [2021-02-24 03:28:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:28:39,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:28:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:39,040 INFO L225 Difference]: With dead ends: 450 [2021-02-24 03:28:39,040 INFO L226 Difference]: Without dead ends: 284 [2021-02-24 03:28:39,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-24 03:28:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 244. [2021-02-24 03:28:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-24 03:28:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2021-02-24 03:28:39,244 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 158 [2021-02-24 03:28:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:39,245 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2021-02-24 03:28:39,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:28:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2021-02-24 03:28:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:28:39,250 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:39,250 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] [2021-02-24 03:28:39,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:28:39,251 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:39,252 INFO L82 PathProgramCache]: Analyzing trace with hash -679572061, now seen corresponding path program 1 times [2021-02-24 03:28:39,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:39,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820904264] [2021-02-24 03:28:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:39,257 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:39,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,789 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:28:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:28:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:28:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:39,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820904264] [2021-02-24 03:28:39,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:39,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:28:39,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978969030] [2021-02-24 03:28:39,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:28:39,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:39,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:28:39,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:28:39,935 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 4 states. [2021-02-24 03:28:40,733 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:28:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:41,700 INFO L93 Difference]: Finished difference Result 362 states and 403 transitions. [2021-02-24 03:28:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:28:41,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:28:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:41,705 INFO L225 Difference]: With dead ends: 362 [2021-02-24 03:28:41,705 INFO L226 Difference]: Without dead ends: 267 [2021-02-24 03:28:41,707 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 [2021-02-24 03:28:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-24 03:28:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 234. [2021-02-24 03:28:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-24 03:28:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 249 transitions. [2021-02-24 03:28:41,802 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 249 transitions. Word has length 159 [2021-02-24 03:28:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:41,803 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 249 transitions. [2021-02-24 03:28:41,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:28:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 249 transitions. [2021-02-24 03:28:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-24 03:28:41,806 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:41,806 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] [2021-02-24 03:28:41,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:28:41,807 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash -394868311, now seen corresponding path program 1 times [2021-02-24 03:28:41,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:41,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384005791] [2021-02-24 03:28:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:41,813 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:41,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:41,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:41,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:41,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:41,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:28:41,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,308 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:42,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:28:42,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:28:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:28:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:28:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:28:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:28:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:42,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384005791] [2021-02-24 03:28:42,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:42,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:28:42,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33648907] [2021-02-24 03:28:42,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:28:42,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:42,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:28:42,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:28:42,535 INFO L87 Difference]: Start difference. First operand 234 states and 249 transitions. Second operand 10 states. [2021-02-24 03:28:43,276 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:43,707 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:28:44,122 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:28:44,540 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:44,903 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:45,290 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:46,918 INFO L93 Difference]: Finished difference Result 408 states and 465 transitions. [2021-02-24 03:28:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:28:46,919 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-24 03:28:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:46,923 INFO L225 Difference]: With dead ends: 408 [2021-02-24 03:28:46,924 INFO L226 Difference]: Without dead ends: 289 [2021-02-24 03:28:46,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:28:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-24 03:28:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 234. [2021-02-24 03:28:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-24 03:28:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 248 transitions. [2021-02-24 03:28:47,014 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 248 transitions. Word has length 172 [2021-02-24 03:28:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:47,014 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 248 transitions. [2021-02-24 03:28:47,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:28:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 248 transitions. [2021-02-24 03:28:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-24 03:28:47,017 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:47,017 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] [2021-02-24 03:28:47,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:28:47,018 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:47,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1302300084, now seen corresponding path program 1 times [2021-02-24 03:28:47,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:47,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034575929] [2021-02-24 03:28:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:47,022 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,424 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:28:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:28:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:28:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:28:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-24 03:28:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-24 03:28:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-24 03:28:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:47,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:47,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:47,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034575929] [2021-02-24 03:28:47,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:47,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:28:47,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227248529] [2021-02-24 03:28:47,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:28:47,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:47,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:28:47,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:28:47,647 INFO L87 Difference]: Start difference. First operand 234 states and 248 transitions. Second operand 10 states. [2021-02-24 03:28:48,331 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:50,195 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:50,616 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:51,050 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:51,569 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:51,968 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:52,387 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:52,783 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:53,973 INFO L93 Difference]: Finished difference Result 630 states and 772 transitions. [2021-02-24 03:28:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 03:28:53,974 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2021-02-24 03:28:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:53,979 INFO L225 Difference]: With dead ends: 630 [2021-02-24 03:28:53,980 INFO L226 Difference]: Without dead ends: 511 [2021-02-24 03:28:53,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-24 03:28:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-02-24 03:28:54,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 345. [2021-02-24 03:28:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2021-02-24 03:28:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 376 transitions. [2021-02-24 03:28:54,179 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 376 transitions. Word has length 180 [2021-02-24 03:28:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:54,180 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 376 transitions. [2021-02-24 03:28:54,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:28:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 376 transitions. [2021-02-24 03:28:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-24 03:28:54,183 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:54,184 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:54,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:28:54,184 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash 812446382, now seen corresponding path program 1 times [2021-02-24 03:28:54,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:54,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011147957] [2021-02-24 03:28:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:54,188 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,552 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-24 03:28:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:28:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:28:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:28:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:28:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-24 03:28:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-24 03:28:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-24 03:28:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:54,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011147957] [2021-02-24 03:28:54,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:54,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:28:54,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239396021] [2021-02-24 03:28:54,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:28:54,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:54,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:28:54,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:28:54,761 INFO L87 Difference]: Start difference. First operand 345 states and 376 transitions. Second operand 7 states. [2021-02-24 03:28:55,457 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:56,499 INFO L93 Difference]: Finished difference Result 567 states and 655 transitions. [2021-02-24 03:28:56,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:28:56,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2021-02-24 03:28:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:56,504 INFO L225 Difference]: With dead ends: 567 [2021-02-24 03:28:56,505 INFO L226 Difference]: Without dead ends: 337 [2021-02-24 03:28:56,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:28:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-02-24 03:28:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 271. [2021-02-24 03:28:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-02-24 03:28:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 286 transitions. [2021-02-24 03:28:56,612 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 286 transitions. Word has length 190 [2021-02-24 03:28:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:56,613 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 286 transitions. [2021-02-24 03:28:56,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:28:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 286 transitions. [2021-02-24 03:28:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-24 03:28:56,616 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:56,616 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, 1, 1, 1] [2021-02-24 03:28:56,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:28:56,616 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:56,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1625880092, now seen corresponding path program 1 times [2021-02-24 03:28:56,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:56,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032047370] [2021-02-24 03:28:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:56,621 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:56,701 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:56,773 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:56,970 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:28:56,970 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:28:56,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:28:56,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:28:56 BoogieIcfgContainer [2021-02-24 03:28:56,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:28:56,997 INFO L168 Benchmark]: Toolchain (without parser) took 23102.36 ms. Allocated memory was 169.9 MB in the beginning and 482.3 MB in the end (delta: 312.5 MB). Free memory was 144.7 MB in the beginning and 342.4 MB in the end (delta: -197.7 MB). Peak memory consumption was 116.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:56,998 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 169.9 MB. Free memory is still 143.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:28:56,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.21 ms. Allocated memory is still 169.9 MB. Free memory was 143.6 MB in the beginning and 122.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:56,998 INFO L168 Benchmark]: Boogie Preprocessor took 173.77 ms. Allocated memory is still 169.9 MB. Free memory was 122.9 MB in the beginning and 118.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:56,999 INFO L168 Benchmark]: RCFGBuilder took 1567.90 ms. Allocated memory was 169.9 MB in the beginning and 217.1 MB in the end (delta: 47.2 MB). Free memory was 118.9 MB in the beginning and 151.6 MB in the end (delta: -32.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:57,000 INFO L168 Benchmark]: TraceAbstraction took 20738.69 ms. Allocated memory was 217.1 MB in the beginning and 482.3 MB in the end (delta: 265.3 MB). Free memory was 151.6 MB in the beginning and 342.4 MB in the end (delta: -190.8 MB). Peak memory consumption was 74.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:57,001 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 169.9 MB. Free memory is still 143.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 602.21 ms. Allocated memory is still 169.9 MB. Free memory was 143.6 MB in the beginning and 122.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 173.77 ms. Allocated memory is still 169.9 MB. Free memory was 122.9 MB in the beginning and 118.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1567.90 ms. Allocated memory was 169.9 MB in the beginning and 217.1 MB in the end (delta: 47.2 MB). Free memory was 118.9 MB in the beginning and 151.6 MB in the end (delta: -32.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20738.69 ms. Allocated memory was 217.1 MB in the beginning and 482.3 MB in the end (delta: 265.3 MB). Free memory was 151.6 MB in the beginning and 342.4 MB in the end (delta: -190.8 MB). Peak memory consumption was 74.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 645]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L186] int waterLevel = 1; [L187] int methaneLevelCritical = 0; [L444] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int pumpRunning = 0; [L655] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L834] int splverifierCounter ; [L835] int tmp ; [L836] int tmp___0 ; [L837] int tmp___1 ; [L838] int tmp___2 ; [L841] splverifierCounter = 0 [L843] COND TRUE 1 [L845] COND TRUE splverifierCounter < 4 [L851] tmp = __VERIFIER_nondet_int() [L853] COND TRUE \read(tmp) [L855] CALL waterRise() [L204] COND TRUE waterLevel < 2 [L205] waterLevel = waterLevel + 1 [L855] RET waterRise() [L861] tmp___0 = __VERIFIER_nondet_int() [L863] COND FALSE !(\read(tmp___0)) [L871] tmp___2 = __VERIFIER_nondet_int() [L873] COND TRUE \read(tmp___2) [L875] CALL startSystem() [L828] systemActive = 1 [L875] RET startSystem() [L888] CALL timeShift() [L662] COND FALSE !(\read(pumpRunning)) [L669] COND TRUE \read(systemActive) [L671] CALL processEnvironment() [L691] int tmp ; [L694] COND FALSE !(\read(pumpRunning)) [L709] FCALL processEnvironment__wrappee__base() [L671] RET processEnvironment() [L677] CALL __utac_acc__Specification3_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L903] int tmp___1 ; [L907] CALL, EXPR isMethaneLevelCritical() [L225] int retValue_acc ; [L228] retValue_acc = methaneLevelCritical [L229] return (retValue_acc); [L907] RET, EXPR isMethaneLevelCritical() [L907] tmp = isMethaneLevelCritical() [L909] COND FALSE !(\read(tmp)) [L913] CALL, EXPR getWaterLevel() [L257] int retValue_acc ; [L260] retValue_acc = waterLevel [L261] return (retValue_acc); [L913] RET, EXPR getWaterLevel() [L913] tmp___0 = getWaterLevel() [L915] COND TRUE tmp___0 == 2 [L917] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L917] RET, EXPR isPumpRunning() [L917] tmp___1 = isPumpRunning() [L919] COND FALSE !(\read(tmp___1)) [L923] CALL __automaton_fail() [L645] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1080 SDtfs, 1962 SDslu, 1426 SDs, 0 SdLazy, 2744 SolverSat, 580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 360 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...