/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_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:36:57,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:36:57,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:36:57,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:36:57,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:36:57,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:36:57,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:36:57,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:36:57,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:36:57,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:36:57,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:36:57,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:36:57,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:36:57,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:36:57,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:36:57,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:36:57,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:36:57,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:36:57,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:36:57,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:36:57,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:36:57,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:36:57,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:36:57,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:36:57,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:36:57,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:36:57,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:36:57,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:36:57,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:36:57,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:36:57,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:36:57,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:36:57,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:36:57,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:36:57,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:36:57,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:36:57,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:36:57,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:36:57,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:36:57,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:36:57,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:36:57,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:36:57,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:36:57,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:36:57,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:36:57,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:36:57,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:36:57,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:36:57,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:36:57,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:36:57,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:36:57,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:36:57,326 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:36:57,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:36:57,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:36:57,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:36:57,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:36:57,327 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:36:57,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:36:57,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:36:57,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:36:57,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:36:57,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:36:57,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:36:57,329 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:36:57,329 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:36:57,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:36:57,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:36:57,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:36:57,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:36:57,762 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:36:57,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2021-02-24 03:36:57,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bddf8da/4a05a6289de649b4aaed28db2d2ad379/FLAGf1f98b40c [2021-02-24 03:36:58,565 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:36:58,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2021-02-24 03:36:58,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bddf8da/4a05a6289de649b4aaed28db2d2ad379/FLAGf1f98b40c [2021-02-24 03:36:58,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6bddf8da/4a05a6289de649b4aaed28db2d2ad379 [2021-02-24 03:36:58,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:36:58,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:36:58,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:36:58,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:36:58,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:36:58,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:36:58" (1/1) ... [2021-02-24 03:36:58,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd4b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:58, skipping insertion in model container [2021-02-24 03:36:58,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:36:58" (1/1) ... [2021-02-24 03:36:58,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:36:58,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:36:59,023 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_spec4_product33.cil.c[16936,16949] [2021-02-24 03:36:59,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:36:59,045 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:36:59,151 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_spec4_product33.cil.c[16936,16949] [2021-02-24 03:36:59,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:36:59,205 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:36:59,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59 WrapperNode [2021-02-24 03:36:59,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:36:59,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:36:59,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:36:59,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:36:59,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... [2021-02-24 03:36:59,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... [2021-02-24 03:36:59,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... [2021-02-24 03:36:59,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... [2021-02-24 03:36:59,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... [2021-02-24 03:36:59,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... [2021-02-24 03:36:59,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... [2021-02-24 03:36:59,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:36:59,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:36:59,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:36:59,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:36:59,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:36:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:36:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:36:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:36:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:36:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:36:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:36:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:36:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:36:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:36:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:36:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:36:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:36:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:36:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:36:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:36:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:36:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:36:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:36:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:36:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:36:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:36:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:36:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:36:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:36:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:36:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:36:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:36:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:36:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:36:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:36:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:36:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:36:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:36:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:36:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:36:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:36:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:36:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-24 03:36:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:36:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:36:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:36:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:36:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:36:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:36:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:36:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:36:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:36:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:36:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:36:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:36:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:36:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:36:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:36:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:36:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:36:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:36:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:36:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:36:59,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:36:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:36:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:36:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:36:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:36:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:36:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:36:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:36:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:36:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:36:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:36:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:36:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:36:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:36:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:36:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:36:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:36:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:36:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:36:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:36:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:36:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:36:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:36:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-24 03:36:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:36:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:36:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:36:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:36:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:36:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:36:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:36:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:37:01,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:37:01,031 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:37:01,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:37:01 BoogieIcfgContainer [2021-02-24 03:37:01,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:37:01,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:37:01,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:37:01,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:37:01,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:36:58" (1/3) ... [2021-02-24 03:37:01,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:37:01, skipping insertion in model container [2021-02-24 03:37:01,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:36:59" (2/3) ... [2021-02-24 03:37:01,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:37:01, skipping insertion in model container [2021-02-24 03:37:01,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:37:01" (3/3) ... [2021-02-24 03:37:01,043 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2021-02-24 03:37:01,051 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:37:01,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:37:01,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:37:01,102 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:37:01,102 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:37:01,102 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:37:01,103 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:37:01,103 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:37:01,103 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:37:01,103 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:37:01,103 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:37:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2021-02-24 03:37:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:37:01,149 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:01,150 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] [2021-02-24 03:37:01,151 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1202902043, now seen corresponding path program 1 times [2021-02-24 03:37:01,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:01,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579445518] [2021-02-24 03:37:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:01,253 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:01,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:01,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:01,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:01,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,224 WARN L202 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:02,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:02,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:02,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:02,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:02,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:02,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:02,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:02,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:02,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:02,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:37:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:02,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:02,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:37:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:02,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:02,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:02,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579445518] [2021-02-24 03:37:02,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:02,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:37:02,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485418225] [2021-02-24 03:37:02,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:37:02,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:02,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:37:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:37:02,469 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2021-02-24 03:37:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:04,433 INFO L93 Difference]: Finished difference Result 425 states and 507 transitions. [2021-02-24 03:37:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:37:04,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:37:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:04,452 INFO L225 Difference]: With dead ends: 425 [2021-02-24 03:37:04,452 INFO L226 Difference]: Without dead ends: 271 [2021-02-24 03:37:04,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:37:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-02-24 03:37:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 232. [2021-02-24 03:37:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2021-02-24 03:37:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 250 transitions. [2021-02-24 03:37:04,595 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 250 transitions. Word has length 147 [2021-02-24 03:37:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:04,596 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 250 transitions. [2021-02-24 03:37:04,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:37:04,596 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 250 transitions. [2021-02-24 03:37:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:37:04,601 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:04,601 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] [2021-02-24 03:37:04,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:37:04,602 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2017654119, now seen corresponding path program 1 times [2021-02-24 03:37:04,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:04,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208710439] [2021-02-24 03:37:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:04,606 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:04,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:04,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:04,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:04,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:04,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:04,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,333 WARN L202 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:05,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:05,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:05,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:05,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:05,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:05,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:05,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:05,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:05,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:05,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:37:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:05,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:05,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:37:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:05,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:05,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:05,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208710439] [2021-02-24 03:37:05,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:05,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:37:05,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820599378] [2021-02-24 03:37:05,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:37:05,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:05,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:37:05,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:37:05,443 INFO L87 Difference]: Start difference. First operand 232 states and 250 transitions. Second operand 4 states. [2021-02-24 03:37:06,658 WARN L202 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:07,868 INFO L93 Difference]: Finished difference Result 341 states and 381 transitions. [2021-02-24 03:37:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:37:07,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:37:07,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:07,874 INFO L225 Difference]: With dead ends: 341 [2021-02-24 03:37:07,874 INFO L226 Difference]: Without dead ends: 254 [2021-02-24 03:37:07,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:37:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-24 03:37:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-02-24 03:37:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-02-24 03:37:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2021-02-24 03:37:07,958 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 148 [2021-02-24 03:37:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:07,958 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2021-02-24 03:37:07,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:37:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2021-02-24 03:37:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-24 03:37:07,961 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:07,962 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] [2021-02-24 03:37:07,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:37:07,962 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:07,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:07,963 INFO L82 PathProgramCache]: Analyzing trace with hash 384793059, now seen corresponding path program 1 times [2021-02-24 03:37:07,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:07,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356515387] [2021-02-24 03:37:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:07,967 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:08,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:08,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:08,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:08,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:08,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:08,780 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:08,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:08,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:37:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:08,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:08,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:08,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:08,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:37:08,963 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:37:08,965 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:37:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:08,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:37:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:08,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:08,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:37:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:09,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:09,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356515387] [2021-02-24 03:37:09,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:09,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:37:09,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082043838] [2021-02-24 03:37:09,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:37:09,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:09,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:37:09,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:37:09,056 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand 9 states. [2021-02-24 03:37:10,047 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:10,845 WARN L202 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:11,543 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:37:12,222 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:12,898 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:13,557 WARN L202 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:15,362 INFO L93 Difference]: Finished difference Result 361 states and 406 transitions. [2021-02-24 03:37:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 03:37:15,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-24 03:37:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:15,367 INFO L225 Difference]: With dead ends: 361 [2021-02-24 03:37:15,367 INFO L226 Difference]: Without dead ends: 254 [2021-02-24 03:37:15,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:37:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-24 03:37:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-02-24 03:37:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-02-24 03:37:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 236 transitions. [2021-02-24 03:37:15,449 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 236 transitions. Word has length 157 [2021-02-24 03:37:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:15,449 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 236 transitions. [2021-02-24 03:37:15,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:37:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 236 transitions. [2021-02-24 03:37:15,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-24 03:37:15,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:15,452 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] [2021-02-24 03:37:15,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:37:15,453 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:15,454 INFO L82 PathProgramCache]: Analyzing trace with hash 624499832, now seen corresponding path program 1 times [2021-02-24 03:37:15,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:15,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589282670] [2021-02-24 03:37:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:15,457 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:15,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:15,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:15,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:15,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:15,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:15,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:15,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:15,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:15,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:15,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:15,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:15,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,108 WARN L202 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-24 03:37:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:16,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:16,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:37:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-24 03:37:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-24 03:37:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:16,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:16,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:16,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589282670] [2021-02-24 03:37:16,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:16,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:37:16,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058759272] [2021-02-24 03:37:16,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:37:16,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:16,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:37:16,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:37:16,281 INFO L87 Difference]: Start difference. First operand 222 states and 236 transitions. Second operand 6 states. [2021-02-24 03:37:17,197 WARN L202 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:19,553 WARN L202 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:20,373 INFO L93 Difference]: Finished difference Result 483 states and 549 transitions. [2021-02-24 03:37:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 03:37:20,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-24 03:37:20,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:20,379 INFO L225 Difference]: With dead ends: 483 [2021-02-24 03:37:20,379 INFO L226 Difference]: Without dead ends: 376 [2021-02-24 03:37:20,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:37:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-02-24 03:37:20,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 317. [2021-02-24 03:37:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2021-02-24 03:37:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 341 transitions. [2021-02-24 03:37:20,524 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 341 transitions. Word has length 165 [2021-02-24 03:37:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:20,524 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 341 transitions. [2021-02-24 03:37:20,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:37:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 341 transitions. [2021-02-24 03:37:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-02-24 03:37:20,527 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:20,528 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] [2021-02-24 03:37:20,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:37:20,528 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:20,529 INFO L82 PathProgramCache]: Analyzing trace with hash -373210986, now seen corresponding path program 1 times [2021-02-24 03:37:20,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:20,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279111572] [2021-02-24 03:37:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:20,532 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:37:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:20,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:20,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:20,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:20,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:20,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:20,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:20,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:20,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:20,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:20,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:37:20,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:20,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,223 WARN L202 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:37:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:37:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:37:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:37:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:37:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:37:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:37:21,312 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:37:21,313 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:37:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:37:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-24 03:37:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:37:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:37:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:37:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-24 03:37:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:21,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:37:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-24 03:37:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:37:21,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:37:21,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:37:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:37:21,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279111572] [2021-02-24 03:37:21,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:37:21,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 03:37:21,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649312116] [2021-02-24 03:37:21,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 03:37:21,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:37:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 03:37:21,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:37:21,488 INFO L87 Difference]: Start difference. First operand 317 states and 341 transitions. Second operand 14 states. [2021-02-24 03:37:22,541 WARN L202 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:23,397 WARN L202 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:24,091 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:37:24,798 WARN L202 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:25,486 WARN L202 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:26,145 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:27,424 WARN L202 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:37:29,370 WARN L202 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:30,063 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:30,774 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:31,491 WARN L202 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:37:32,236 WARN L202 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-24 03:37:32,967 WARN L202 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:37:33,691 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:34,419 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:35,197 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-24 03:37:35,984 WARN L202 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:37:38,044 WARN L202 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:37:38,758 WARN L202 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:39,600 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:37:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:37:41,148 INFO L93 Difference]: Finished difference Result 921 states and 1103 transitions. [2021-02-24 03:37:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 03:37:41,149 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2021-02-24 03:37:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:37:41,156 INFO L225 Difference]: With dead ends: 921 [2021-02-24 03:37:41,156 INFO L226 Difference]: Without dead ends: 719 [2021-02-24 03:37:41,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-24 03:37:41,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-02-24 03:37:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 622. [2021-02-24 03:37:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2021-02-24 03:37:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 692 transitions. [2021-02-24 03:37:41,478 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 692 transitions. Word has length 189 [2021-02-24 03:37:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:37:41,478 INFO L480 AbstractCegarLoop]: Abstraction has 622 states and 692 transitions. [2021-02-24 03:37:41,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 03:37:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 692 transitions. [2021-02-24 03:37:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-02-24 03:37:41,484 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:37:41,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:37:41,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:37:41,486 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:37:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:37:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1750208703, now seen corresponding path program 1 times [2021-02-24 03:37:41,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:37:41,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853827998] [2021-02-24 03:37:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:37:41,548 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 03:37:41,553 INFO L168 Benchmark]: Toolchain (without parser) took 42935.51 ms. Allocated memory was 174.1 MB in the beginning and 476.1 MB in the end (delta: 302.0 MB). Free memory was 149.0 MB in the beginning and 374.0 MB in the end (delta: -225.1 MB). Peak memory consumption was 77.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:41,553 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 174.1 MB. Free memory is still 149.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:37:41,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.34 ms. Allocated memory is still 174.1 MB. Free memory was 147.7 MB in the beginning and 127.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:41,554 INFO L168 Benchmark]: Boogie Preprocessor took 88.41 ms. Allocated memory is still 174.1 MB. Free memory was 127.4 MB in the beginning and 123.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:41,554 INFO L168 Benchmark]: RCFGBuilder took 1737.62 ms. Allocated memory was 174.1 MB in the beginning and 221.2 MB in the end (delta: 47.2 MB). Free memory was 123.4 MB in the beginning and 191.1 MB in the end (delta: -67.7 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:41,555 INFO L168 Benchmark]: TraceAbstraction took 40515.46 ms. Allocated memory was 221.2 MB in the beginning and 476.1 MB in the end (delta: 254.8 MB). Free memory was 190.6 MB in the beginning and 374.0 MB in the end (delta: -183.4 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:37:41,557 INFO L339 ainManager$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 174.1 MB. Free memory is still 149.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 577.34 ms. Allocated memory is still 174.1 MB. Free memory was 147.7 MB in the beginning and 127.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.41 ms. Allocated memory is still 174.1 MB. Free memory was 127.4 MB in the beginning and 123.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1737.62 ms. Allocated memory was 174.1 MB in the beginning and 221.2 MB in the end (delta: 47.2 MB). Free memory was 123.4 MB in the beginning and 191.1 MB in the end (delta: -67.7 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 40515.46 ms. Allocated memory was 221.2 MB in the beginning and 476.1 MB in the end (delta: 254.8 MB). Free memory was 190.6 MB in the beginning and 374.0 MB in the end (delta: -183.4 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...