/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:09:51,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:09:51,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:09:51,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:09:51,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:09:51,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:09:51,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:09:51,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:09:51,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:09:51,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:09:51,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:09:51,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:09:51,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:09:51,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:09:51,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:09:51,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:09:51,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:09:51,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:09:51,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:09:51,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:09:51,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:09:51,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:09:51,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:09:51,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:09:51,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:09:51,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:09:51,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:09:51,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:09:51,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:09:51,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:09:51,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:09:51,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:09:51,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:09:51,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:09:51,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:09:51,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:09:51,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:09:51,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:09:51,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:09:51,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:09:51,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:09:51,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:09:51,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:09:51,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:09:51,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:09:51,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:09:51,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:09:51,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:09:51,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:09:51,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:09:51,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:09:51,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:09:51,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:09:51,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:09:51,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:09:51,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:09:51,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:09:51,432 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:09:51,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:09:51,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:09:51,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:09:51,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:09:51,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:09:51,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:09:51,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:09:51,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:09:51,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:09:51,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:09:51,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:09:51,854 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:09:51,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2021-02-23 16:09:51,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06269fef1/c0ba94db4b614cc080f52d4ea29f6878/FLAG630aef14a [2021-02-23 16:09:52,688 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:09:52,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2021-02-23 16:09:52,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06269fef1/c0ba94db4b614cc080f52d4ea29f6878/FLAG630aef14a [2021-02-23 16:09:52,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06269fef1/c0ba94db4b614cc080f52d4ea29f6878 [2021-02-23 16:09:52,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:09:52,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:09:52,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:09:52,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:09:52,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:09:52,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:09:52" (1/1) ... [2021-02-23 16:09:52,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52939616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:52, skipping insertion in model container [2021-02-23 16:09:52,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:09:52" (1/1) ... [2021-02-23 16:09:53,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:09:53,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:09:53,391 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_spec1_product49.cil.c[18106,18119] [2021-02-23 16:09:53,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:09:53,406 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:09:53,538 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_spec1_product49.cil.c[18106,18119] [2021-02-23 16:09:53,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:09:53,583 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:09:53,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53 WrapperNode [2021-02-23 16:09:53,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:09:53,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:09:53,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:09:53,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:09:53,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (1/1) ... [2021-02-23 16:09:53,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (1/1) ... [2021-02-23 16:09:53,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (1/1) ... [2021-02-23 16:09:53,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (1/1) ... [2021-02-23 16:09:53,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (1/1) ... [2021-02-23 16:09:53,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (1/1) ... [2021-02-23 16:09:53,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (1/1) ... [2021-02-23 16:09:53,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:09:53,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:09:53,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:09:53,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:09:53,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (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 [2021-02-23 16:09:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:09:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:09:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:09:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:09:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:09:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:09:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:09:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:09:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:09:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:09:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:09:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:09:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:09:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:09:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:09:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:09:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:09:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:09:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:09:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:09:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:09:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:09:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:09:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:09:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:09:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:09:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:09:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:09:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:09:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:09:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:09:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:09:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:09:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:09:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:09:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:09:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:09:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:09:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:09:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:09:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:09:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:09:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:09:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:09:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:09:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:09:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:09:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:09:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:09:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:09:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:09:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:09:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:09:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:09:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:09:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:09:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:09:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:09:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:09:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:09:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:09:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:09:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:09:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:09:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:09:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:09:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:09:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:09:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:09:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:09:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:09:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:09:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:09:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:09:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:09:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:09:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:09:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:09:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:09:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:09:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:09:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:09:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:09:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:09:55,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:09:55,104 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:09:55,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:09:55 BoogieIcfgContainer [2021-02-23 16:09:55,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:09:55,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:09:55,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:09:55,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:09:55,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:09:52" (1/3) ... [2021-02-23 16:09:55,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb77439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:09:55, skipping insertion in model container [2021-02-23 16:09:55,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:09:53" (2/3) ... [2021-02-23 16:09:55,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb77439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:09:55, skipping insertion in model container [2021-02-23 16:09:55,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:09:55" (3/3) ... [2021-02-23 16:09:55,115 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2021-02-23 16:09:55,122 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:09:55,129 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:09:55,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:09:55,175 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:09:55,175 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:09:55,175 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:09:55,175 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:09:55,175 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:09:55,176 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:09:55,176 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:09:55,176 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:09:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2021-02-23 16:09:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:09:55,218 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:55,219 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] [2021-02-23 16:09:55,219 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:55,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1692639048, now seen corresponding path program 1 times [2021-02-23 16:09:55,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:55,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244560829] [2021-02-23 16:09:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:55,317 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:55,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:55,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:55,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:55,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,034 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:56,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:56,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:56,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:56,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:56,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:56,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:56,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:56,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:56,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:56,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:56,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:56,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:09:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:56,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:56,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:56,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244560829] [2021-02-23 16:09:56,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:56,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:09:56,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952427685] [2021-02-23 16:09:56,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:09:56,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:56,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:09:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:09:56,279 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 3 states. [2021-02-23 16:09:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:57,808 INFO L93 Difference]: Finished difference Result 495 states and 586 transitions. [2021-02-23 16:09:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:09:57,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:09:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:57,838 INFO L225 Difference]: With dead ends: 495 [2021-02-23 16:09:57,838 INFO L226 Difference]: Without dead ends: 307 [2021-02-23 16:09:57,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:09:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-02-23 16:09:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 266. [2021-02-23 16:09:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-23 16:09:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 288 transitions. [2021-02-23 16:09:58,034 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 288 transitions. Word has length 147 [2021-02-23 16:09:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:58,035 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 288 transitions. [2021-02-23 16:09:58,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:09:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 288 transitions. [2021-02-23 16:09:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:09:58,040 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:58,040 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] [2021-02-23 16:09:58,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:09:58,041 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash 487640680, now seen corresponding path program 1 times [2021-02-23 16:09:58,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:58,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32203869] [2021-02-23 16:09:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:58,046 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:58,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,438 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:09:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:09:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:58,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:58,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:09:58,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32203869] [2021-02-23 16:09:58,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:58,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:09:58,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751603562] [2021-02-23 16:09:58,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:09:58,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:58,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:09:58,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:09:58,587 INFO L87 Difference]: Start difference. First operand 266 states and 288 transitions. Second operand 4 states. [2021-02-23 16:09:59,241 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:00,259 INFO L93 Difference]: Finished difference Result 411 states and 460 transitions. [2021-02-23 16:10:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:10:00,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:10:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:00,264 INFO L225 Difference]: With dead ends: 411 [2021-02-23 16:10:00,264 INFO L226 Difference]: Without dead ends: 290 [2021-02-23 16:10:00,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:10:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-23 16:10:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 256. [2021-02-23 16:10:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2021-02-23 16:10:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 275 transitions. [2021-02-23 16:10:00,382 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 275 transitions. Word has length 148 [2021-02-23 16:10:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:00,383 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 275 transitions. [2021-02-23 16:10:00,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:10:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 275 transitions. [2021-02-23 16:10:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:10:00,385 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:00,386 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] [2021-02-23 16:10:00,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:10:00,386 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:00,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1888366931, now seen corresponding path program 1 times [2021-02-23 16:10:00,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:00,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506753642] [2021-02-23 16:10:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:00,392 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:00,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:00,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:00,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:00,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,754 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:00,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:10:00,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:00,862 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:10:00,863 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:10:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:10:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:10:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:00,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:00,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:00,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506753642] [2021-02-23 16:10:00,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:00,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:10:00,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239187374] [2021-02-23 16:10:00,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:10:00,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:00,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:10:00,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:10:00,933 INFO L87 Difference]: Start difference. First operand 256 states and 275 transitions. Second operand 9 states. [2021-02-23 16:10:01,546 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:01,870 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:02,119 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:02,446 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:02,727 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:03,054 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:04,437 INFO L93 Difference]: Finished difference Result 431 states and 485 transitions. [2021-02-23 16:10:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:10:04,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:10:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:04,442 INFO L225 Difference]: With dead ends: 431 [2021-02-23 16:10:04,443 INFO L226 Difference]: Without dead ends: 290 [2021-02-23 16:10:04,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:10:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-23 16:10:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 256. [2021-02-23 16:10:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2021-02-23 16:10:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2021-02-23 16:10:04,583 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 157 [2021-02-23 16:10:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:04,584 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2021-02-23 16:10:04,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:10:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2021-02-23 16:10:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 16:10:04,586 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:04,587 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] [2021-02-23 16:10:04,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:10:04,587 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:04,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1510432270, now seen corresponding path program 1 times [2021-02-23 16:10:04,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:04,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213077591] [2021-02-23 16:10:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:04,592 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:04,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:04,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:04,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:04,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:04,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:04,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:04,927 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:04,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:04,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:04,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:04,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:04,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:04,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:04,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:10:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:05,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:05,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:05,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:05,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:05,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:05,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:05,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:10:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:05,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:10:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:05,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:05,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:05,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213077591] [2021-02-23 16:10:05,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:05,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:10:05,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329597967] [2021-02-23 16:10:05,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:10:05,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:05,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:10:05,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:10:05,110 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand 6 states. [2021-02-23 16:10:05,585 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:07,010 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:07,645 INFO L93 Difference]: Finished difference Result 562 states and 640 transitions. [2021-02-23 16:10:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:10:07,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-23 16:10:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:07,649 INFO L225 Difference]: With dead ends: 562 [2021-02-23 16:10:07,650 INFO L226 Difference]: Without dead ends: 421 [2021-02-23 16:10:07,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:10:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-02-23 16:10:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 362. [2021-02-23 16:10:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2021-02-23 16:10:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 389 transitions. [2021-02-23 16:10:07,841 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 389 transitions. Word has length 170 [2021-02-23 16:10:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:07,842 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 389 transitions. [2021-02-23 16:10:07,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:10:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 389 transitions. [2021-02-23 16:10:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-23 16:10:07,845 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:07,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:07,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:10:07,846 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:07,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:07,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1060519215, now seen corresponding path program 1 times [2021-02-23 16:10:07,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:07,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483577287] [2021-02-23 16:10:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:07,850 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:07,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:07,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:07,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:07,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:07,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:07,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:07,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:07,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:07,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:07,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:10:07,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:07,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,146 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:10:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:10:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:08,289 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-23 16:10:08,293 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-23 16:10:08,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:08,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-23 16:10:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:10:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:08,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:08,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:08,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483577287] [2021-02-23 16:10:08,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:08,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:10:08,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281744596] [2021-02-23 16:10:08,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:10:08,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:08,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:10:08,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:10:08,408 INFO L87 Difference]: Start difference. First operand 362 states and 389 transitions. Second operand 9 states. [2021-02-23 16:10:08,892 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:09,870 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:10,175 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:10,476 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:10,754 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:11,091 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:10:11,339 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:12,814 INFO L93 Difference]: Finished difference Result 862 states and 1004 transitions. [2021-02-23 16:10:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 16:10:12,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2021-02-23 16:10:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:12,819 INFO L225 Difference]: With dead ends: 862 [2021-02-23 16:10:12,819 INFO L226 Difference]: Without dead ends: 615 [2021-02-23 16:10:12,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:10:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-02-23 16:10:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 538. [2021-02-23 16:10:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2021-02-23 16:10:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 592 transitions. [2021-02-23 16:10:13,112 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 592 transitions. Word has length 194 [2021-02-23 16:10:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:13,112 INFO L480 AbstractCegarLoop]: Abstraction has 538 states and 592 transitions. [2021-02-23 16:10:13,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:10:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 592 transitions. [2021-02-23 16:10:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-23 16:10:13,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:13,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:13,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:10:13,117 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:13,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1103325390, now seen corresponding path program 1 times [2021-02-23 16:10:13,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:13,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920787430] [2021-02-23 16:10:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:13,121 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,452 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:13,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:10:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-23 16:10:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:10:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:13,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:13,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:13,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920787430] [2021-02-23 16:10:13,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:13,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:10:13,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929571704] [2021-02-23 16:10:13,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:10:13,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:13,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:10:13,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:10:13,621 INFO L87 Difference]: Start difference. First operand 538 states and 592 transitions. Second operand 9 states. [2021-02-23 16:10:14,113 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:15,526 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:15,817 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:16,114 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:16,405 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:16,671 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:16,956 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:17,225 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:17,609 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:18,902 INFO L93 Difference]: Finished difference Result 1438 states and 1679 transitions. [2021-02-23 16:10:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:10:18,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2021-02-23 16:10:18,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:18,909 INFO L225 Difference]: With dead ends: 1438 [2021-02-23 16:10:18,910 INFO L226 Difference]: Without dead ends: 1015 [2021-02-23 16:10:18,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:10:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-02-23 16:10:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 900. [2021-02-23 16:10:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2021-02-23 16:10:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 999 transitions. [2021-02-23 16:10:19,320 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 999 transitions. Word has length 194 [2021-02-23 16:10:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:19,320 INFO L480 AbstractCegarLoop]: Abstraction has 900 states and 999 transitions. [2021-02-23 16:10:19,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:10:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 999 transitions. [2021-02-23 16:10:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-23 16:10:19,324 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:19,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:19,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:10:19,325 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:19,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:19,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1150639167, now seen corresponding path program 1 times [2021-02-23 16:10:19,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:19,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707141188] [2021-02-23 16:10:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:19,329 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,634 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:10:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:10:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:10:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:19,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:19,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:19,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:19,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707141188] [2021-02-23 16:10:19,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:19,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:19,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517921232] [2021-02-23 16:10:19,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:19,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:19,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:19,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:19,908 INFO L87 Difference]: Start difference. First operand 900 states and 999 transitions. Second operand 10 states. [2021-02-23 16:10:20,439 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:21,866 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:22,144 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:22,417 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:22,702 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:23,013 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:23,328 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:23,609 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:23,904 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:24,870 INFO L93 Difference]: Finished difference Result 1123 states and 1315 transitions. [2021-02-23 16:10:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:10:24,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2021-02-23 16:10:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:24,878 INFO L225 Difference]: With dead ends: 1123 [2021-02-23 16:10:24,878 INFO L226 Difference]: Without dead ends: 1120 [2021-02-23 16:10:24,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:10:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-02-23 16:10:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 900. [2021-02-23 16:10:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2021-02-23 16:10:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 997 transitions. [2021-02-23 16:10:25,337 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 997 transitions. Word has length 199 [2021-02-23 16:10:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:25,338 INFO L480 AbstractCegarLoop]: Abstraction has 900 states and 997 transitions. [2021-02-23 16:10:25,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 997 transitions. [2021-02-23 16:10:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 16:10:25,343 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:25,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:25,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:10:25,344 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:25,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:25,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1488353158, now seen corresponding path program 1 times [2021-02-23 16:10:25,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:25,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394069136] [2021-02-23 16:10:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:25,349 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,636 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:10:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:25,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:25,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:25,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:25,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:25,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:10:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:10:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:25,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:25,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:25,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394069136] [2021-02-23 16:10:25,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:25,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:25,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241413888] [2021-02-23 16:10:25,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:25,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:25,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:25,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:25,828 INFO L87 Difference]: Start difference. First operand 900 states and 997 transitions. Second operand 10 states. [2021-02-23 16:10:26,962 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:27,246 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:27,547 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:10:27,831 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:28,125 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:28,388 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:29,809 INFO L93 Difference]: Finished difference Result 1927 states and 2243 transitions. [2021-02-23 16:10:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:10:29,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2021-02-23 16:10:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:29,821 INFO L225 Difference]: With dead ends: 1927 [2021-02-23 16:10:29,821 INFO L226 Difference]: Without dead ends: 1142 [2021-02-23 16:10:29,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:10:29,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-02-23 16:10:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 932. [2021-02-23 16:10:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-23 16:10:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1029 transitions. [2021-02-23 16:10:30,239 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1029 transitions. Word has length 200 [2021-02-23 16:10:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:30,239 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1029 transitions. [2021-02-23 16:10:30,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1029 transitions. [2021-02-23 16:10:30,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 16:10:30,246 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:30,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:30,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:10:30,247 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash 514482982, now seen corresponding path program 1 times [2021-02-23 16:10:30,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:30,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764269122] [2021-02-23 16:10:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:30,251 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:30,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:30,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,565 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:30,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:30,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:10:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:30,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:30,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:30,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:10:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:10:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:30,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:30,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:30,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764269122] [2021-02-23 16:10:30,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:30,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:10:30,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458487271] [2021-02-23 16:10:30,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:10:30,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:30,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:10:30,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:10:30,791 INFO L87 Difference]: Start difference. First operand 932 states and 1029 transitions. Second operand 13 states. [2021-02-23 16:10:31,392 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:31,681 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:31,962 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:32,237 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:32,504 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:33,279 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:33,553 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:33,834 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:34,131 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:34,421 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:35,901 INFO L93 Difference]: Finished difference Result 1739 states and 2005 transitions. [2021-02-23 16:10:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:10:35,902 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2021-02-23 16:10:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:35,912 INFO L225 Difference]: With dead ends: 1739 [2021-02-23 16:10:35,912 INFO L226 Difference]: Without dead ends: 922 [2021-02-23 16:10:35,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-23 16:10:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-02-23 16:10:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 778. [2021-02-23 16:10:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2021-02-23 16:10:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 837 transitions. [2021-02-23 16:10:36,363 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 837 transitions. Word has length 200 [2021-02-23 16:10:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:36,364 INFO L480 AbstractCegarLoop]: Abstraction has 778 states and 837 transitions. [2021-02-23 16:10:36,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:10:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 837 transitions. [2021-02-23 16:10:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:10:36,368 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:36,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:36,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:10:36,368 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1837543636, now seen corresponding path program 1 times [2021-02-23 16:10:36,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:36,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832787441] [2021-02-23 16:10:36,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:36,373 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:10:36,460 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:10:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:10:36,546 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:10:36,759 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:10:36,759 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:10:36,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:10:36,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:10:36 BoogieIcfgContainer [2021-02-23 16:10:36,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:10:36,784 INFO L168 Benchmark]: Toolchain (without parser) took 43810.71 ms. Allocated memory was 151.0 MB in the beginning and 811.6 MB in the end (delta: 660.6 MB). Free memory was 126.1 MB in the beginning and 696.9 MB in the end (delta: -570.8 MB). Peak memory consumption was 90.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:36,785 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 419.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:10:36,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.59 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:36,785 INFO L168 Benchmark]: Boogie Preprocessor took 134.84 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 132.4 MB in the end (delta: -28.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:36,785 INFO L168 Benchmark]: RCFGBuilder took 1385.64 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 132.4 MB in the beginning and 124.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 61.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:36,785 INFO L168 Benchmark]: TraceAbstraction took 41675.25 ms. Allocated memory was 194.0 MB in the beginning and 811.6 MB in the end (delta: 617.6 MB). Free memory was 124.6 MB in the beginning and 696.9 MB in the end (delta: -572.4 MB). Peak memory consumption was 44.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:10:36,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 419.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 596.59 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.84 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 132.4 MB in the end (delta: -28.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1385.64 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 132.4 MB in the beginning and 124.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 61.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 41675.25 ms. Allocated memory was 194.0 MB in the beginning and 811.6 MB in the end (delta: 617.6 MB). Free memory was 124.6 MB in the beginning and 696.9 MB in the end (delta: -572.4 MB). Peak memory consumption was 44.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 952]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L71] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int pumpRunning = 0; [L548] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; [L152] int retValue_acc ; [L153] int tmp ; [L157] FCALL select_helpers() [L158] FCALL select_features() [L159] CALL, EXPR valid_product() [L835] int retValue_acc ; [L838] retValue_acc = 1 [L839] return (retValue_acc); [L159] RET, EXPR valid_product() [L159] tmp = valid_product() [L161] COND TRUE \read(tmp) [L163] FCALL setup() [L164] CALL runTest() [L143] CALL test() [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 [L754] COND TRUE 1 [L756] COND TRUE splverifierCounter < 4 [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) [L766] CALL waterRise() [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 [L766] RET waterRise() [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND TRUE \read(tmp___0) [L776] CALL changeMethaneLevel() [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 [L776] RET changeMethaneLevel() [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) [L797] CALL timeShift() [L554] COND FALSE !(\read(pumpRunning)) [L561] COND TRUE \read(systemActive) [L563] CALL processEnvironment() [L609] int tmp ; [L612] COND FALSE !(\read(pumpRunning)) [L627] CALL processEnvironment__wrappee__highWaterSensor() [L583] int tmp ; [L586] COND TRUE ! pumpRunning [L588] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L925] int retValue_acc ; [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L588] RET, EXPR isHighWaterLevel() [L588] tmp = isHighWaterLevel() [L590] COND TRUE \read(tmp) [L592] CALL activatePump() [L637] pumpRunning = 1 [L592] RET activatePump() [L627] RET processEnvironment__wrappee__highWaterSensor() [L563] RET processEnvironment() [L569] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L952] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 646 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 33.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2201 SDtfs, 4159 SDslu, 4371 SDs, 0 SdLazy, 8256 SolverSat, 1199 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=932occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 934 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...