/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-b7b32d2 [2021-02-22 01:03:04,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:03:04,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:03:04,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:03:04,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:03:04,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:03:04,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:03:04,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:03:04,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:03:04,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:03:04,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:03:04,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:03:04,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:03:04,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:03:04,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:03:04,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:03:04,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:03:04,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:03:04,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:03:04,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:03:04,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:03:05,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:03:05,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:03:05,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:03:05,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:03:05,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:03:05,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:03:05,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:03:05,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:03:05,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:03:05,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:03:05,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:03:05,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:03:05,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:03:05,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:03:05,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:03:05,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:03:05,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:03:05,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:03:05,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:03:05,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:03:05,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:03:05,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:03:05,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:03:05,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:03:05,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:03:05,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:03:05,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:03:05,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:03:05,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:03:05,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:03:05,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:03:05,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:03:05,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:03:05,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:03:05,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:03:05,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:03:05,056 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:03:05,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:03:05,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:03:05,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:03:05,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:03:05,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:03:05,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:03:05,058 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:03:05,058 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:03:05,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:03:05,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:03:05,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:03:05,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:03:05,457 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:03:05,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2021-02-22 01:03:05,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1375dba/a1ab527f39ad4d0496c5358aa42c4c9d/FLAG68ae28f72 [2021-02-22 01:03:06,146 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:03:06,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2021-02-22 01:03:06,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1375dba/a1ab527f39ad4d0496c5358aa42c4c9d/FLAG68ae28f72 [2021-02-22 01:03:06,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1375dba/a1ab527f39ad4d0496c5358aa42c4c9d [2021-02-22 01:03:06,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:03:06,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:03:06,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:03:06,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:03:06,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:03:06,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:03:06" (1/1) ... [2021-02-22 01:03:06,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a43c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:06, skipping insertion in model container [2021-02-22 01:03:06,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:03:06" (1/1) ... [2021-02-22 01:03:06,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:03:06,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:03:06,998 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] [2021-02-22 01:03:07,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:03:07,066 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:03:07,152 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] [2021-02-22 01:03:07,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:03:07,201 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:03:07,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07 WrapperNode [2021-02-22 01:03:07,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:03:07,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:03:07,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:03:07,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:03:07,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... [2021-02-22 01:03:07,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... [2021-02-22 01:03:07,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... [2021-02-22 01:03:07,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... [2021-02-22 01:03:07,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... [2021-02-22 01:03:07,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... [2021-02-22 01:03:07,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... [2021-02-22 01:03:07,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:03:07,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:03:07,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:03:07,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:03:07,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:03:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:03:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:03:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:03:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:03:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:03:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:03:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:03:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:03:07,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:03:07,460 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:03:07,460 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:03:07,460 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:03:07,460 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:03:07,461 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:03:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:03:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:03:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:03:07,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:03:07,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:03:07,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:03:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:03:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:03:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:03:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:03:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:03:07,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:03:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:03:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:03:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:03:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:03:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:03:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:03:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:03:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:03:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:03:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:03:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:03:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:03:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:03:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:03:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:03:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:03:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:03:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:03:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:03:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:03:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:03:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:03:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:03:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:03:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:03:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:03:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:03:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:03:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:03:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:03:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:03:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:03:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:03:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:03:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:03:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:03:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:03:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:03:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:03:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:03:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:03:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:03:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:03:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:03:07,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:03:07,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:03:07,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:03:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:03:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:03:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:03:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:03:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:03:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:03:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:03:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:03:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:03:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:03:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:03:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:03:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:03:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:03:09,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:03:09,001 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:03:09,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:03:09 BoogieIcfgContainer [2021-02-22 01:03:09,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:03:09,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:03:09,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:03:09,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:03:09,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:03:06" (1/3) ... [2021-02-22 01:03:09,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e9849f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:03:09, skipping insertion in model container [2021-02-22 01:03:09,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:07" (2/3) ... [2021-02-22 01:03:09,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e9849f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:03:09, skipping insertion in model container [2021-02-22 01:03:09,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:03:09" (3/3) ... [2021-02-22 01:03:09,012 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2021-02-22 01:03:09,019 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:03:09,025 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:03:09,044 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:03:09,067 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:03:09,068 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:03:09,068 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:03:09,068 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:03:09,068 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:03:09,068 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:03:09,068 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:03:09,069 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:03:09,091 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2021-02-22 01:03:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:03:09,111 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:09,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:03:09,112 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1813095377, now seen corresponding path program 1 times [2021-02-22 01:03:09,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:09,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935250084] [2021-02-22 01:03:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:09,219 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:09,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:09,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:09,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:09,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:09,996 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:09,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:03:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:03:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:03:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:10,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:10,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:10,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935250084] [2021-02-22 01:03:10,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:10,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:03:10,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689346183] [2021-02-22 01:03:10,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:03:10,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:10,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:03:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:03:10,232 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2021-02-22 01:03:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:11,544 INFO L93 Difference]: Finished difference Result 450 states and 533 transitions. [2021-02-22 01:03:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:03:11,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:03:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:11,571 INFO L225 Difference]: With dead ends: 450 [2021-02-22 01:03:11,571 INFO L226 Difference]: Without dead ends: 284 [2021-02-22 01:03:11,578 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 [2021-02-22 01:03:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-22 01:03:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 244. [2021-02-22 01:03:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-22 01:03:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2021-02-22 01:03:11,756 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 158 [2021-02-22 01:03:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:11,758 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2021-02-22 01:03:11,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:03:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2021-02-22 01:03:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:03:11,762 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:11,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:03:11,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:03:11,763 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:11,764 INFO L82 PathProgramCache]: Analyzing trace with hash -679572061, now seen corresponding path program 1 times [2021-02-22 01:03:11,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:11,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064463901] [2021-02-22 01:03:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:11,768 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:11,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:11,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:11,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:11,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,141 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:03:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:03:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:03:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:12,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:12,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:12,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064463901] [2021-02-22 01:03:12,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:12,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:03:12,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415899807] [2021-02-22 01:03:12,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:03:12,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:12,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:03:12,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:03:12,267 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 4 states. [2021-02-22 01:03:12,871 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:03:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:13,671 INFO L93 Difference]: Finished difference Result 362 states and 403 transitions. [2021-02-22 01:03:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:03:13,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:03:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:13,675 INFO L225 Difference]: With dead ends: 362 [2021-02-22 01:03:13,676 INFO L226 Difference]: Without dead ends: 267 [2021-02-22 01:03:13,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:03:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-22 01:03:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 234. [2021-02-22 01:03:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-22 01:03:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 249 transitions. [2021-02-22 01:03:13,768 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 249 transitions. Word has length 159 [2021-02-22 01:03:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:13,769 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 249 transitions. [2021-02-22 01:03:13,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:03:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 249 transitions. [2021-02-22 01:03:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:03:13,771 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:13,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:03:13,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:03:13,772 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash -394868311, now seen corresponding path program 1 times [2021-02-22 01:03:13,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:13,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342409559] [2021-02-22 01:03:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:13,777 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:13,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:13,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:13,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:13,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:13,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:13,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:13,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:13,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:13,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:13,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:03:13,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:13,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,145 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:14,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:14,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:03:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:03:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:03:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:14,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:14,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:14,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342409559] [2021-02-22 01:03:14,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:14,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:03:14,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296385320] [2021-02-22 01:03:14,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:03:14,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:14,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:03:14,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:03:14,351 INFO L87 Difference]: Start difference. First operand 234 states and 249 transitions. Second operand 10 states. [2021-02-22 01:03:14,949 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:15,280 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:03:15,520 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:03:15,793 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:16,067 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:16,330 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:17,588 INFO L93 Difference]: Finished difference Result 408 states and 465 transitions. [2021-02-22 01:03:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:03:17,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:03:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:17,592 INFO L225 Difference]: With dead ends: 408 [2021-02-22 01:03:17,592 INFO L226 Difference]: Without dead ends: 289 [2021-02-22 01:03:17,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:03:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-22 01:03:17,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 234. [2021-02-22 01:03:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-22 01:03:17,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 248 transitions. [2021-02-22 01:03:17,688 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 248 transitions. Word has length 172 [2021-02-22 01:03:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:17,689 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 248 transitions. [2021-02-22 01:03:17,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:03:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 248 transitions. [2021-02-22 01:03:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-22 01:03:17,695 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:17,695 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] [2021-02-22 01:03:17,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:03:17,696 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1302300084, now seen corresponding path program 1 times [2021-02-22 01:03:17,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:17,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848039200] [2021-02-22 01:03:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:17,702 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:17,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:17,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:17,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:17,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:17,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:17,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:17,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:17,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:17,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,064 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:18,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:03:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:03:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-22 01:03:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-22 01:03:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:18,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-22 01:03:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:18,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:18,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:18,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848039200] [2021-02-22 01:03:18,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:18,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:03:18,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520538974] [2021-02-22 01:03:18,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:03:18,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:18,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:03:18,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:03:18,239 INFO L87 Difference]: Start difference. First operand 234 states and 248 transitions. Second operand 10 states. [2021-02-22 01:03:18,794 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:20,210 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:20,529 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:20,867 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:21,155 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:21,424 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:21,702 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:21,967 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:22,930 INFO L93 Difference]: Finished difference Result 630 states and 772 transitions. [2021-02-22 01:03:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 01:03:22,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2021-02-22 01:03:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:22,937 INFO L225 Difference]: With dead ends: 630 [2021-02-22 01:03:22,937 INFO L226 Difference]: Without dead ends: 511 [2021-02-22 01:03:22,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-22 01:03:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-02-22 01:03:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 345. [2021-02-22 01:03:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2021-02-22 01:03:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 376 transitions. [2021-02-22 01:03:23,100 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 376 transitions. Word has length 180 [2021-02-22 01:03:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:23,101 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 376 transitions. [2021-02-22 01:03:23,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:03:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 376 transitions. [2021-02-22 01:03:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-22 01:03:23,104 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:23,104 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] [2021-02-22 01:03:23,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:03:23,105 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:23,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash 812446382, now seen corresponding path program 1 times [2021-02-22 01:03:23,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:23,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652749974] [2021-02-22 01:03:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:23,109 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:23,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:23,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:23,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:23,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:23,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,364 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:23,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-22 01:03:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 01:03:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:03:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:03:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-22 01:03:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-22 01:03:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-22 01:03:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:23,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:23,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:23,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652749974] [2021-02-22 01:03:23,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:23,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:03:23,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909100609] [2021-02-22 01:03:23,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:03:23,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:23,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:03:23,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:03:23,527 INFO L87 Difference]: Start difference. First operand 345 states and 376 transitions. Second operand 7 states. [2021-02-22 01:03:24,032 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:24,821 INFO L93 Difference]: Finished difference Result 567 states and 655 transitions. [2021-02-22 01:03:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:03:24,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2021-02-22 01:03:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:24,825 INFO L225 Difference]: With dead ends: 567 [2021-02-22 01:03:24,826 INFO L226 Difference]: Without dead ends: 337 [2021-02-22 01:03:24,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:03:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-02-22 01:03:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 271. [2021-02-22 01:03:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-02-22 01:03:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 286 transitions. [2021-02-22 01:03:24,939 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 286 transitions. Word has length 190 [2021-02-22 01:03:24,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:24,940 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 286 transitions. [2021-02-22 01:03:24,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:03:24,940 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 286 transitions. [2021-02-22 01:03:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-22 01:03:24,942 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:24,943 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] [2021-02-22 01:03:24,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:03:24,943 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1625880092, now seen corresponding path program 1 times [2021-02-22 01:03:24,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:24,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088270307] [2021-02-22 01:03:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:24,947 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:25,051 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:25,130 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:25,353 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:03:25,353 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:03:25,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:03:25,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:03:25 BoogieIcfgContainer [2021-02-22 01:03:25,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:03:25,384 INFO L168 Benchmark]: Toolchain (without parser) took 18919.38 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 126.0 MB in the beginning and 289.1 MB in the end (delta: -163.1 MB). Peak memory consumption was 139.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:25,385 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:03:25,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.79 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 104.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:25,385 INFO L168 Benchmark]: Boogie Preprocessor took 108.35 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 100.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:25,386 INFO L168 Benchmark]: RCFGBuilder took 1688.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.0 MB in the beginning and 116.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:25,386 INFO L168 Benchmark]: TraceAbstraction took 16377.70 ms. Allocated memory was 181.4 MB in the beginning and 453.0 MB in the end (delta: 271.6 MB). Free memory was 115.5 MB in the beginning and 289.1 MB in the end (delta: -173.7 MB). Peak memory consumption was 97.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:25,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 720.79 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 104.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.35 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 100.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1688.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.0 MB in the beginning and 116.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16377.70 ms. Allocated memory was 181.4 MB in the beginning and 453.0 MB in the end (delta: 271.6 MB). Free memory was 115.5 MB in the beginning and 289.1 MB in the end (delta: -173.7 MB). Peak memory consumption was 97.9 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: 16.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1081 SDtfs, 1962 SDslu, 1432 SDs, 0 SdLazy, 2754 SolverSat, 580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 5.5s 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...