/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_spec4_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:55:50,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:55:50,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:55:50,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:55:50,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:55:50,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:55:50,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:55:50,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:55:50,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:55:50,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:55:50,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:55:50,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:55:50,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:55:50,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:55:50,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:55:50,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:55:50,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:55:50,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:55:50,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:55:50,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:55:50,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:55:50,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:55:50,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:55:50,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:55:50,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:55:50,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:55:50,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:55:50,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:55:50,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:55:50,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:55:50,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:55:50,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:55:50,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:55:50,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:55:50,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:55:50,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:55:50,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:55:50,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:55:50,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:55:50,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:55:50,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:55:50,741 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 16:55:50,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:55:50,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:55:50,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:55:50,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:55:50,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:55:50,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:55:50,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:55:50,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:55:50,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:55:50,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:55:50,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:55:50,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:55:50,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:55:50,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:55:50,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:55:50,775 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:55:50,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:55:50,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:55:50,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:55:50,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:55:50,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:55:50,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:55:50,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:55:51,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:55:51,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:55:51,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:55:51,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:55:51,224 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:55:51,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2021-02-23 16:55:51,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7812313f/f58baa3d318f4d648463168e69578319/FLAGb4ff99a72 [2021-02-23 16:55:52,073 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:55:52,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2021-02-23 16:55:52,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7812313f/f58baa3d318f4d648463168e69578319/FLAGb4ff99a72 [2021-02-23 16:55:52,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7812313f/f58baa3d318f4d648463168e69578319 [2021-02-23 16:55:52,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:55:52,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:55:52,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:55:52,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:55:52,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:55:52,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5c2091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:52, skipping insertion in model container [2021-02-23 16:55:52,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:55:52" (1/1) ... [2021-02-23 16:55:52,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:55:52,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:55:52,984 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c[18004,18017] [2021-02-23 16:55:52,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:55:53,002 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:55:53,120 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c[18004,18017] [2021-02-23 16:55:53,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:55:53,170 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:55:53,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53 WrapperNode [2021-02-23 16:55:53,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:55:53,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:55:53,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:55:53,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:55:53,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (1/1) ... [2021-02-23 16:55:53,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (1/1) ... [2021-02-23 16:55:53,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (1/1) ... [2021-02-23 16:55:53,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (1/1) ... [2021-02-23 16:55:53,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (1/1) ... [2021-02-23 16:55:53,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (1/1) ... [2021-02-23 16:55:53,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (1/1) ... [2021-02-23 16:55:53,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:55:53,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:55:53,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:55:53,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:55:53,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (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 16:55:53,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:55:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:55:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:55:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:55:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:55:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:55:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:55:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:55:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:55:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:55:53,438 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:55:53,438 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:55:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:55:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:55:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:55:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:55:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:55:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:55:53,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:55:53,441 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:55:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:55:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:55:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:55:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:55:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:55:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:55:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:55:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:55:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:55:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:55:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:55:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:55:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:55:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:55:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:55:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:55:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:55:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:55:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:55:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:55:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:55:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:55:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:55:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:55:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:55:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:55:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:55:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:55:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:55:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:55:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:55:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:55:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:55:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:55:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:55:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:55:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:55:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:55:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:55:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:55:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:55:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:55:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:55:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:55:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:55:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:55:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:55:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:55:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:55:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:55:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:55:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:55:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:55:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:55:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:55:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:55:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:55:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:55:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:55:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:55:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:55:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:55:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:55:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:55:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:55:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:55:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:55:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:55:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:55:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:55:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:55:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:55:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:55:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:55:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:55:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:55:54,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:55:54,890 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:55:54,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:55:54 BoogieIcfgContainer [2021-02-23 16:55:54,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:55:54,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:55:54,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:55:54,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:55:54,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:55:52" (1/3) ... [2021-02-23 16:55:54,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df904b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:55:54, skipping insertion in model container [2021-02-23 16:55:54,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:53" (2/3) ... [2021-02-23 16:55:54,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df904b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:55:54, skipping insertion in model container [2021-02-23 16:55:54,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:55:54" (3/3) ... [2021-02-23 16:55:54,904 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product31.cil.c [2021-02-23 16:55:54,911 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:55:54,917 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:55:54,938 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:55:54,965 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:55:54,965 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:55:54,966 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:55:54,966 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:55:54,966 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:55:54,966 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:55:54,966 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:55:54,966 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:55:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-23 16:55:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:55:55,012 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:55,013 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 16:55:55,014 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2057795247, now seen corresponding path program 1 times [2021-02-23 16:55:55,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:55,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612052029] [2021-02-23 16:55:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:55,115 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:55,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:55,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:55,877 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:56,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:56,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:56,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:56,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:56,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:56,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:56,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:56,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:56,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:56,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:56,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:55:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:56,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:56,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:55:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:56,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:56,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:56,104 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 16:55:56,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612052029] [2021-02-23 16:55:56,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:56,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:55:56,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280324315] [2021-02-23 16:55:56,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:55:56,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:56,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:55:56,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:55:56,134 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-23 16:55:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:55:58,052 INFO L93 Difference]: Finished difference Result 485 states and 579 transitions. [2021-02-23 16:55:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:55:58,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:55:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:55:58,086 INFO L225 Difference]: With dead ends: 485 [2021-02-23 16:55:58,087 INFO L226 Difference]: Without dead ends: 303 [2021-02-23 16:55:58,094 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 16:55:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-23 16:55:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 260. [2021-02-23 16:55:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-23 16:55:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2021-02-23 16:55:58,317 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 147 [2021-02-23 16:55:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:55:58,321 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2021-02-23 16:55:58,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:55:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2021-02-23 16:55:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:55:58,341 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:58,341 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 16:55:58,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:55:58,344 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:58,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1453079616, now seen corresponding path program 1 times [2021-02-23 16:55:58,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:58,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248353591] [2021-02-23 16:55:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:58,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:58,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,912 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:55:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:55:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:59,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:59,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:59,123 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 16:55:59,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248353591] [2021-02-23 16:55:59,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:59,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:55:59,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630970680] [2021-02-23 16:55:59,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:55:59,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:59,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:55:59,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:55:59,127 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand 4 states. [2021-02-23 16:55:59,961 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:01,057 INFO L93 Difference]: Finished difference Result 395 states and 445 transitions. [2021-02-23 16:56:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:56:01,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:56:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:01,062 INFO L225 Difference]: With dead ends: 395 [2021-02-23 16:56:01,062 INFO L226 Difference]: Without dead ends: 286 [2021-02-23 16:56:01,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:56:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-02-23 16:56:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 250. [2021-02-23 16:56:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-23 16:56:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-23 16:56:01,155 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 148 [2021-02-23 16:56:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:01,156 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-23 16:56:01,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:56:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-23 16:56:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:56:01,159 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:01,159 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 16:56:01,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:56:01,159 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2024396768, now seen corresponding path program 1 times [2021-02-23 16:56:01,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:01,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489090156] [2021-02-23 16:56:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:01,164 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:01,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:01,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:01,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:01,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:01,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:01,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:01,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,670 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:56:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:01,796 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:56:01,799 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:56:01,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:56:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:56:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:01,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:01,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:01,885 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 16:56:01,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489090156] [2021-02-23 16:56:01,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:01,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:56:01,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170772492] [2021-02-23 16:56:01,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:56:01,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:01,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:56:01,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:56:01,888 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 9 states. [2021-02-23 16:56:02,523 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:03,024 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:03,433 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:03,830 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:04,226 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:04,598 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:05,694 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:08,089 INFO L93 Difference]: Finished difference Result 651 states and 751 transitions. [2021-02-23 16:56:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:56:08,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:56:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:08,096 INFO L225 Difference]: With dead ends: 651 [2021-02-23 16:56:08,096 INFO L226 Difference]: Without dead ends: 516 [2021-02-23 16:56:08,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:56:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-02-23 16:56:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 449. [2021-02-23 16:56:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2021-02-23 16:56:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 503 transitions. [2021-02-23 16:56:08,285 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 503 transitions. Word has length 157 [2021-02-23 16:56:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:08,286 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 503 transitions. [2021-02-23 16:56:08,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:56:08,287 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 503 transitions. [2021-02-23 16:56:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:56:08,290 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:08,290 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] [2021-02-23 16:56:08,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:56:08,291 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:08,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1569204534, now seen corresponding path program 1 times [2021-02-23 16:56:08,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:08,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615449531] [2021-02-23 16:56:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:08,295 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:08,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:08,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:08,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:08,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:08,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:08,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:08,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:08,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:08,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:56:08,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,783 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:56:08,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:56:08,893 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:56:08,894 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:56:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:56:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:56:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:08,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:08,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:08,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:56:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:08,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:08,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:09,035 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 16:56:09,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615449531] [2021-02-23 16:56:09,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:09,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:56:09,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445510930] [2021-02-23 16:56:09,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:56:09,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:56:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:56:09,045 INFO L87 Difference]: Start difference. First operand 449 states and 503 transitions. Second operand 14 states. [2021-02-23 16:56:09,849 WARN L202 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:10,359 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:10,717 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:11,098 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:11,541 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:11,953 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:12,734 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:14,324 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:14,870 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:15,452 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:15,857 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:16,264 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:16,645 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:17,073 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:17,530 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:17,940 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:18,481 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:19,001 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:19,476 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:19,951 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:21,984 INFO L93 Difference]: Finished difference Result 1535 states and 1876 transitions. [2021-02-23 16:56:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:56:21,985 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:56:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:21,995 INFO L225 Difference]: With dead ends: 1535 [2021-02-23 16:56:21,996 INFO L226 Difference]: Without dead ends: 1201 [2021-02-23 16:56:21,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:56:22,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-02-23 16:56:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1058. [2021-02-23 16:56:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2021-02-23 16:56:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1226 transitions. [2021-02-23 16:56:22,464 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1226 transitions. Word has length 166 [2021-02-23 16:56:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:22,465 INFO L480 AbstractCegarLoop]: Abstraction has 1058 states and 1226 transitions. [2021-02-23 16:56:22,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:56:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1226 transitions. [2021-02-23 16:56:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:56:22,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:22,470 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] [2021-02-23 16:56:22,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:56:22,471 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash 843183697, now seen corresponding path program 1 times [2021-02-23 16:56:22,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:22,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357645061] [2021-02-23 16:56:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:22,475 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,872 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:56:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:56:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:56:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:22,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:56:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:22,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:22,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:23,028 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 16:56:23,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357645061] [2021-02-23 16:56:23,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:23,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:56:23,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926903872] [2021-02-23 16:56:23,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:56:23,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:23,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:56:23,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:56:23,031 INFO L87 Difference]: Start difference. First operand 1058 states and 1226 transitions. Second operand 6 states. [2021-02-23 16:56:23,640 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:25,037 INFO L93 Difference]: Finished difference Result 1650 states and 1972 transitions. [2021-02-23 16:56:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:56:25,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:56:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:25,043 INFO L225 Difference]: With dead ends: 1650 [2021-02-23 16:56:25,043 INFO L226 Difference]: Without dead ends: 707 [2021-02-23 16:56:25,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:56:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-02-23 16:56:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 673. [2021-02-23 16:56:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2021-02-23 16:56:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 732 transitions. [2021-02-23 16:56:25,422 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 732 transitions. Word has length 171 [2021-02-23 16:56:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:25,423 INFO L480 AbstractCegarLoop]: Abstraction has 673 states and 732 transitions. [2021-02-23 16:56:25,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:56:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 732 transitions. [2021-02-23 16:56:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:56:25,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:25,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:25,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:56:25,429 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:25,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1571426906, now seen corresponding path program 1 times [2021-02-23 16:56:25,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:25,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113790970] [2021-02-23 16:56:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY