./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:22:40,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:22:40,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:22:40,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:22:40,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:22:40,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:22:40,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:22:40,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:22:40,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:22:40,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:22:40,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:22:40,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:22:40,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:22:40,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:22:40,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:22:40,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:22:40,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:22:40,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:22:40,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:22:40,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:22:40,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:22:40,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:22:40,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:22:40,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:22:40,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:22:40,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:22:40,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:22:40,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:22:40,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:22:40,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:22:40,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:22:40,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:22:40,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:22:40,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:22:40,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:22:40,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:22:40,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:22:40,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:22:40,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:22:40,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:22:40,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:22:40,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 23:22:40,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:22:40,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:22:40,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:22:40,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:22:40,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:22:40,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:22:40,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:22:40,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:22:40,207 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:22:40,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:22:40,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:22:40,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:22:40,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:22:40,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:22:40,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:22:40,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:22:40,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:22:40,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:22:40,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:22:40,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:22:40,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:22:40,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:22:40,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:22:40,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:22:40,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:22:40,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:22:40,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:22:40,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:22:40,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:22:40,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:22:40,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:22:40,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-12-06 23:22:40,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:22:40,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:22:40,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:22:40,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:22:40,411 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:22:40,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-12-06 23:22:40,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/37e840b91/748cf14c148c4740b91fa2a04ebb30bc/FLAGfd193f5ec [2021-12-06 23:22:41,111 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:22:41,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-12-06 23:22:41,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/37e840b91/748cf14c148c4740b91fa2a04ebb30bc/FLAGfd193f5ec [2021-12-06 23:22:41,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/37e840b91/748cf14c148c4740b91fa2a04ebb30bc [2021-12-06 23:22:41,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:22:41,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:22:41,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:22:41,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:22:41,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:22:41,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:22:41" (1/1) ... [2021-12-06 23:22:41,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0188e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:41, skipping insertion in model container [2021-12-06 23:22:41,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:22:41" (1/1) ... [2021-12-06 23:22:41,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:22:41,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:22:42,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-12-06 23:22:43,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:22:43,278 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:22:43,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-12-06 23:22:43,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:22:43,627 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:22:43,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43 WrapperNode [2021-12-06 23:22:43,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:22:43,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:22:43,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:22:43,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:22:43,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,827 INFO L137 Inliner]: procedures = 310, calls = 1780, calls flagged for inlining = 174, calls inlined = 157, statements flattened = 4697 [2021-12-06 23:22:43,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:22:43,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:22:43,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:22:43,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:22:43,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:43,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:44,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:22:44,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:22:44,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:22:44,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:22:44,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (1/1) ... [2021-12-06 23:22:44,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:22:44,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:22:44,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:22:44,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:22:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 23:22:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 23:22:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-12-06 23:22:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-12-06 23:22:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 23:22:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 23:22:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 23:22:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 23:22:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_dmac_soft_reset [2021-12-06 23:22:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_dmac_soft_reset [2021-12-06 23:22:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 23:22:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 23:22:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-12-06 23:22:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-12-06 23:22:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-06 23:22:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-06 23:22:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:22:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:22:44,073 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_remove [2021-12-06 23:22:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_remove [2021-12-06 23:22:44,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-06 23:22:44,073 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_send_cmd [2021-12-06 23:22:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_send_cmd [2021-12-06 23:22:44,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-06 23:22:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-06 23:22:44,073 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-06 23:22:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-06 23:22:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_rx_ring [2021-12-06 23:22:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_rx_ring [2021-12-06 23:22:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:22:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:22:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-06 23:22:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-06 23:22:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-06 23:22:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-06 23:22:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 23:22:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 23:22:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:22:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:22:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_read [2021-12-06 23:22:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_read [2021-12-06 23:22:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 23:22:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 23:22:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_mac_address [2021-12-06 23:22:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_mac_address [2021-12-06 23:22:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:22:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_get_stats [2021-12-06 23:22:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_get_stats [2021-12-06 23:22:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-12-06 23:22:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-12-06 23:22:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-06 23:22:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-06 23:22:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-06 23:22:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-06 23:22:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:22:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-06 23:22:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-06 23:22:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-06 23:22:44,078 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-06 23:22:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-06 23:22:44,078 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-06 23:22:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-06 23:22:44,078 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-06 23:22:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-06 23:22:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_open [2021-12-06 23:22:44,079 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_open [2021-12-06 23:22:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 23:22:44,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 23:22:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 23:22:44,079 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 23:22:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-06 23:22:44,079 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-06 23:22:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-06 23:22:44,080 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-06 23:22:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:22:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-06 23:22:44,080 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-06 23:22:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:22:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 23:22:44,080 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 23:22:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-06 23:22:44,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-06 23:22:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-06 23:22:44,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-06 23:22:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 23:22:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 23:22:44,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 23:22:44,081 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 23:22:44,082 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 23:22:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 23:22:44,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 23:22:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 23:22:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_enable_access [2021-12-06 23:22:44,082 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_enable_access [2021-12-06 23:22:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-12-06 23:22:44,082 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-12-06 23:22:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_write [2021-12-06 23:22:44,083 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_write [2021-12-06 23:22:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:22:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-06 23:22:44,083 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-06 23:22:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-06 23:22:44,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-06 23:22:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-12-06 23:22:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-12-06 23:22:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-12-06 23:22:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-12-06 23:22:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 23:22:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 23:22:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 23:22:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 23:22:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-06 23:22:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-06 23:22:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:22:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-06 23:22:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-06 23:22:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-06 23:22:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-06 23:22:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:22:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:22:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_multicast_list [2021-12-06 23:22:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_multicast_list [2021-12-06 23:22:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:22:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-06 23:22:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-06 23:22:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-06 23:22:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-06 23:22:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_alloc_rx_buffer [2021-12-06 23:22:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_alloc_rx_buffer [2021-12-06 23:22:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:22:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-06 23:22:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-06 23:22:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_rx [2021-12-06 23:22:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_rx [2021-12-06 23:22:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-06 23:22:44,088 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-06 23:22:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 23:22:44,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 23:22:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:22:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 23:22:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-06 23:22:44,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-06 23:22:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-12-06 23:22:44,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-12-06 23:22:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_isr [2021-12-06 23:22:44,089 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_isr [2021-12-06 23:22:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-12-06 23:22:44,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-12-06 23:22:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_do_ioctl [2021-12-06 23:22:44,089 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_do_ioctl [2021-12-06 23:22:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_poll_controller [2021-12-06 23:22:44,089 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_poll_controller [2021-12-06 23:22:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-06 23:22:44,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-06 23:22:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-12-06 23:22:44,090 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-12-06 23:22:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 23:22:44,090 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 23:22:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_tx [2021-12-06 23:22:44,090 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_tx [2021-12-06 23:22:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-06 23:22:44,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-06 23:22:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 23:22:44,091 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 23:22:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:22:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_tx_ring [2021-12-06 23:22:44,091 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_tx_ring [2021-12-06 23:22:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-06 23:22:44,091 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-06 23:22:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_pci_flush_write [2021-12-06 23:22:44,091 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_pci_flush_write [2021-12-06 23:22:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:22:44,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:22:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 23:22:44,092 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 23:22:44,542 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:22:44,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:22:44,675 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 23:22:47,076 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:22:47,093 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:22:47,093 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:22:47,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:22:47 BoogieIcfgContainer [2021-12-06 23:22:47,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:22:47,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:22:47,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:22:47,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:22:47,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:22:41" (1/3) ... [2021-12-06 23:22:47,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b4acbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:22:47, skipping insertion in model container [2021-12-06 23:22:47,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:22:43" (2/3) ... [2021-12-06 23:22:47,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b4acbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:22:47, skipping insertion in model container [2021-12-06 23:22:47,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:22:47" (3/3) ... [2021-12-06 23:22:47,102 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-12-06 23:22:47,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:22:47,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:22:47,151 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:22:47,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:22:47,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:22:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2021-12-06 23:22:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 23:22:47,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:22:47,224 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:22:47,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:22:47,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:22:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1671104070, now seen corresponding path program 1 times [2021-12-06 23:22:47,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:22:47,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874077621] [2021-12-06 23:22:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:22:47,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:22:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:22:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:22:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:22:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:22:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:22:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:22:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:22:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:22:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 23:22:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:22:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-06 23:22:47,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:22:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874077621] [2021-12-06 23:22:47,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874077621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:22:47,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:22:47,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:22:47,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850941055] [2021-12-06 23:22:47,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:22:47,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:22:47,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:22:47,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:22:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:22:47,802 INFO L87 Difference]: Start difference. First operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:22:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:22:51,216 INFO L93 Difference]: Finished difference Result 4953 states and 7222 transitions. [2021-12-06 23:22:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:22:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2021-12-06 23:22:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:22:51,267 INFO L225 Difference]: With dead ends: 4953 [2021-12-06 23:22:51,267 INFO L226 Difference]: Without dead ends: 3268 [2021-12-06 23:22:51,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:22:51,281 INFO L933 BasicCegarLoop]: 2513 mSDtfsCounter, 2878 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 1195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 5062 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1195 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:22:51,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3264 Valid, 5062 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1195 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 23:22:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-06 23:22:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3090. [2021-12-06 23:22:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 2136 states have (on average 1.3150749063670413) internal successors, (2809), 2172 states have internal predecessors, (2809), 801 states have call successors, (801), 153 states have call predecessors, (801), 152 states have return successors, (800), 794 states have call predecessors, (800), 800 states have call successors, (800) [2021-12-06 23:22:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 4410 transitions. [2021-12-06 23:22:51,512 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 4410 transitions. Word has length 80 [2021-12-06 23:22:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:22:51,512 INFO L470 AbstractCegarLoop]: Abstraction has 3090 states and 4410 transitions. [2021-12-06 23:22:51,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:22:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 4410 transitions. [2021-12-06 23:22:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 23:22:51,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:22:51,518 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:22:51,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:22:51,519 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:22:51,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:22:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 568154741, now seen corresponding path program 1 times [2021-12-06 23:22:51,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:22:51,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617058177] [2021-12-06 23:22:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:22:51,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:22:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:22:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:22:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:22:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:22:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:22:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:22:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:22:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:22:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 23:22:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:22:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-06 23:22:51,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:22:51,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617058177] [2021-12-06 23:22:51,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617058177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:22:51,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:22:51,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:22:51,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900917457] [2021-12-06 23:22:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:22:51,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:22:51,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:22:51,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:22:51,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:22:51,737 INFO L87 Difference]: Start difference. First operand 3090 states and 4410 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:22:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:22:56,209 INFO L93 Difference]: Finished difference Result 9571 states and 13732 transitions. [2021-12-06 23:22:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:22:56,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 85 [2021-12-06 23:22:56,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:22:56,259 INFO L225 Difference]: With dead ends: 9571 [2021-12-06 23:22:56,259 INFO L226 Difference]: Without dead ends: 6502 [2021-12-06 23:22:56,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:22:56,276 INFO L933 BasicCegarLoop]: 2453 mSDtfsCounter, 2816 mSDsluCounter, 6489 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 1167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 8942 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1167 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:22:56,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3216 Valid, 8942 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1167 Valid, 3118 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-06 23:22:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2021-12-06 23:22:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 6218. [2021-12-06 23:22:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 4302 states have (on average 1.3147373314737332) internal successors, (5656), 4376 states have internal predecessors, (5656), 1605 states have call successors, (1605), 305 states have call predecessors, (1605), 310 states have return successors, (1624), 1596 states have call predecessors, (1624), 1604 states have call successors, (1624) [2021-12-06 23:22:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8885 transitions. [2021-12-06 23:22:56,564 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8885 transitions. Word has length 85 [2021-12-06 23:22:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:22:56,565 INFO L470 AbstractCegarLoop]: Abstraction has 6218 states and 8885 transitions. [2021-12-06 23:22:56,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:22:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8885 transitions. [2021-12-06 23:22:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-12-06 23:22:56,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:22:56,616 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:22:56,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:22:56,616 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:22:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:22:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash -341573449, now seen corresponding path program 1 times [2021-12-06 23:22:56,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:22:56,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253962922] [2021-12-06 23:22:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:22:56,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:22:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:22:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:22:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:22:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:22:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:22:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:22:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:22:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:22:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 23:22:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:22:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:22:57,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:22:57,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253962922] [2021-12-06 23:22:57,079 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 23:22:57,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337570800] [2021-12-06 23:22:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:22:57,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:22:57,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:22:57,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:22:57,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:22:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:57,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:22:57,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:22:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-12-06 23:22:58,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:22:58,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337570800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:22:58,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:22:58,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:22:58,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354701205] [2021-12-06 23:22:58,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:22:58,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:22:58,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:22:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:22:58,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:22:58,120 INFO L87 Difference]: Start difference. First operand 6218 states and 8885 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-12-06 23:22:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:22:58,438 INFO L93 Difference]: Finished difference Result 17502 states and 25013 transitions. [2021-12-06 23:22:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:22:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 467 [2021-12-06 23:22:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:22:58,492 INFO L225 Difference]: With dead ends: 17502 [2021-12-06 23:22:58,492 INFO L226 Difference]: Without dead ends: 11310 [2021-12-06 23:22:58,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:22:58,512 INFO L933 BasicCegarLoop]: 2552 mSDtfsCounter, 1840 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 4648 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:22:58,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 4648 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:22:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2021-12-06 23:22:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11250. [2021-12-06 23:22:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11250 states, 7834 states have (on average 1.315419964258361) internal successors, (10305), 7998 states have internal predecessors, (10305), 2827 states have call successors, (2827), 577 states have call predecessors, (2827), 588 states have return successors, (2870), 2790 states have call predecessors, (2870), 2826 states have call successors, (2870) [2021-12-06 23:22:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11250 states to 11250 states and 16002 transitions. [2021-12-06 23:22:58,959 INFO L78 Accepts]: Start accepts. Automaton has 11250 states and 16002 transitions. Word has length 467 [2021-12-06 23:22:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:22:58,959 INFO L470 AbstractCegarLoop]: Abstraction has 11250 states and 16002 transitions. [2021-12-06 23:22:58,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-12-06 23:22:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 11250 states and 16002 transitions. [2021-12-06 23:22:58,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-12-06 23:22:58,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:22:58,986 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:22:59,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:22:59,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:22:59,188 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:22:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:22:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash 609671314, now seen corresponding path program 1 times [2021-12-06 23:22:59,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:22:59,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002405993] [2021-12-06 23:22:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:22:59,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:22:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:22:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:22:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:22:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:22:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:22:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:22:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:22:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:22:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 23:22:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:22:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:22:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:22:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 23:22:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:22:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:22:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 23:22:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 23:22:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:22:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 23:22:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:22:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:22:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:22:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 23:22:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 23:22:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 23:22:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 23:22:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:22:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 23:22:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 23:22:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 23:22:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:22:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:22:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:22:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:22:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:22:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 23:22:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 23:22:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:22:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:22:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:22:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:22:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 23:22:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 23:22:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 23:22:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:22:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 23:22:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 23:22:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 23:22:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:22:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:22:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 23:22:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 23:23:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 23:23:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 23:23:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 23:23:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-06 23:23:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 23:23:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 23:23:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:23:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 23:23:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-06 23:23:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-06 23:23:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-06 23:23:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 23:23:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 23:23:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 23:23:00,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:23:00,117 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Auxiliary term must not be contained in any collection at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.SmtFreePredicateFactory$AuxiliaryTerm.hashCode(SmtFreePredicateFactory.java:134) at java.base/java.util.HashMap.hash(HashMap.java:339) at java.base/java.util.HashMap.containsKey(HashMap.java:591) at java.base/java.util.HashSet.contains(HashSet.java:204) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.ContainsQuantifier$QuantifierFinder.walk(ContainsQuantifier.java:67) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.ContainsQuantifier.containsQuantifier(ContainsQuantifier.java:124) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckStatisticsGenerator.reportSequenceOfInterpolants(TraceCheckStatisticsGenerator.java:107) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-06 23:23:00,120 INFO L158 Benchmark]: Toolchain (without parser) took 18607.34ms. Allocated memory was 111.1MB in the beginning and 436.2MB in the end (delta: 325.1MB). Free memory was 81.7MB in the beginning and 172.8MB in the end (delta: -91.1MB). Peak memory consumption was 236.1MB. Max. memory is 16.1GB. [2021-12-06 23:23:00,120 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory was 54.4MB in the beginning and 54.3MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:23:00,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2114.77ms. Allocated memory was 111.1MB in the beginning and 146.8MB in the end (delta: 35.7MB). Free memory was 81.7MB in the beginning and 54.5MB in the end (delta: 27.2MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. [2021-12-06 23:23:00,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 198.43ms. Allocated memory is still 146.8MB. Free memory was 54.5MB in the beginning and 62.6MB in the end (delta: -8.1MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-06 23:23:00,122 INFO L158 Benchmark]: Boogie Preprocessor took 178.42ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 62.6MB in the beginning and 88.4MB in the end (delta: -25.8MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2021-12-06 23:23:00,122 INFO L158 Benchmark]: RCFGBuilder took 3089.61ms. Allocated memory was 176.2MB in the beginning and 230.7MB in the end (delta: 54.5MB). Free memory was 88.4MB in the beginning and 104.7MB in the end (delta: -16.3MB). Peak memory consumption was 97.9MB. Max. memory is 16.1GB. [2021-12-06 23:23:00,122 INFO L158 Benchmark]: TraceAbstraction took 13021.27ms. Allocated memory was 230.7MB in the beginning and 436.2MB in the end (delta: 205.5MB). Free memory was 103.7MB in the beginning and 172.8MB in the end (delta: -69.1MB). Peak memory consumption was 138.5MB. Max. memory is 16.1GB. [2021-12-06 23:23:00,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory was 54.4MB in the beginning and 54.3MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2114.77ms. Allocated memory was 111.1MB in the beginning and 146.8MB in the end (delta: 35.7MB). Free memory was 81.7MB in the beginning and 54.5MB in the end (delta: 27.2MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 198.43ms. Allocated memory is still 146.8MB. Free memory was 54.5MB in the beginning and 62.6MB in the end (delta: -8.1MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 178.42ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 62.6MB in the beginning and 88.4MB in the end (delta: -25.8MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * RCFGBuilder took 3089.61ms. Allocated memory was 176.2MB in the beginning and 230.7MB in the end (delta: 54.5MB). Free memory was 88.4MB in the beginning and 104.7MB in the end (delta: -16.3MB). Peak memory consumption was 97.9MB. Max. memory is 16.1GB. * TraceAbstraction took 13021.27ms. Allocated memory was 230.7MB in the beginning and 436.2MB in the end (delta: 205.5MB). Free memory was 103.7MB in the beginning and 172.8MB in the end (delta: -69.1MB). Peak memory consumption was 138.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Auxiliary term must not be contained in any collection de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Auxiliary term must not be contained in any collection: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.SmtFreePredicateFactory$AuxiliaryTerm.hashCode(SmtFreePredicateFactory.java:134) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-06 23:23:00,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:23:01,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:23:01,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:23:01,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:23:01,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:23:01,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:23:01,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:23:01,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:23:01,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:23:01,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:23:01,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:23:01,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:23:01,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:23:01,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:23:01,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:23:01,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:23:01,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:23:01,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:23:01,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:23:01,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:23:01,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:23:01,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:23:01,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:23:01,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:23:01,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:23:01,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:23:01,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:23:01,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:23:01,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:23:01,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:23:01,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:23:01,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:23:01,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:23:01,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:23:01,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:23:01,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:23:01,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:23:01,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:23:01,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:23:01,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:23:01,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:23:01,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-06 23:23:01,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:23:01,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:23:01,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:23:01,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:23:01,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:23:01,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:23:01,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:23:01,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:23:01,761 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:23:01,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:23:01,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:23:01,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:23:01,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:23:01,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:23:01,762 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:23:01,762 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:23:01,762 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:23:01,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:23:01,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:23:01,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:23:01,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:23:01,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:23:01,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:23:01,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:23:01,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:23:01,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:23:01,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:23:01,765 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-12-06 23:23:01,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:23:02,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:23:02,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:23:02,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:23:02,006 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:23:02,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-12-06 23:23:02,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/82693c2b5/ed6d50dad7c14beca6ebfa7812d1333e/FLAG37c1e5334 [2021-12-06 23:23:02,691 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:23:02,691 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-12-06 23:23:02,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/82693c2b5/ed6d50dad7c14beca6ebfa7812d1333e/FLAG37c1e5334 [2021-12-06 23:23:03,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/data/82693c2b5/ed6d50dad7c14beca6ebfa7812d1333e [2021-12-06 23:23:03,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:23:03,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:23:03,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:23:03,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:23:03,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:23:03,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:23:03" (1/1) ... [2021-12-06 23:23:03,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2874465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:03, skipping insertion in model container [2021-12-06 23:23:03,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:23:03" (1/1) ... [2021-12-06 23:23:03,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:23:03,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:23:03,974 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-12-06 23:23:04,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:23:04,772 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 23:23:04,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:23:04,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-12-06 23:23:05,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:23:05,033 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:23:05,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-12-06 23:23:05,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:23:05,400 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:23:05,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05 WrapperNode [2021-12-06 23:23:05,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:23:05,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:23:05,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:23:05,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:23:05,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,620 INFO L137 Inliner]: procedures = 324, calls = 1780, calls flagged for inlining = 174, calls inlined = 157, statements flattened = 4537 [2021-12-06 23:23:05,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:23:05,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:23:05,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:23:05,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:23:05,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:23:05,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:23:05,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:23:05,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:23:05,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (1/1) ... [2021-12-06 23:23:05,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:23:05,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:23:05,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:23:05,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:23:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 23:23:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 23:23:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 23:23:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-12-06 23:23:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-12-06 23:23:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-06 23:23:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 23:23:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 23:23:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-06 23:23:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 23:23:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 23:23:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 23:23:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_dmac_soft_reset [2021-12-06 23:23:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_dmac_soft_reset [2021-12-06 23:23:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 23:23:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 23:23:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-12-06 23:23:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-12-06 23:23:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-06 23:23:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-06 23:23:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:23:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_remove [2021-12-06 23:23:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_remove [2021-12-06 23:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-06 23:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_send_cmd [2021-12-06 23:23:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_send_cmd [2021-12-06 23:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-06 23:23:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-06 23:23:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-06 23:23:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-06 23:23:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_rx_ring [2021-12-06 23:23:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_rx_ring [2021-12-06 23:23:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:23:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:23:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-06 23:23:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-06 23:23:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-06 23:23:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-06 23:23:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 23:23:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 23:23:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:23:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:23:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_read [2021-12-06 23:23:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_read [2021-12-06 23:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 23:23:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 23:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_mac_address [2021-12-06 23:23:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_mac_address [2021-12-06 23:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_get_stats [2021-12-06 23:23:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_get_stats [2021-12-06 23:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-12-06 23:23:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-12-06 23:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-06 23:23:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-06 23:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-06 23:23:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-06 23:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:23:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-06 23:23:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-06 23:23:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-06 23:23:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-06 23:23:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-06 23:23:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-06 23:23:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-06 23:23:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-06 23:23:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-06 23:23:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_open [2021-12-06 23:23:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_open [2021-12-06 23:23:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 23:23:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 23:23:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 23:23:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 23:23:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-06 23:23:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-06 23:23:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-06 23:23:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-06 23:23:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-06 23:23:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-06 23:23:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:23:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 23:23:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-06 23:23:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-06 23:23:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:23:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 23:23:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-06 23:23:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-06 23:23:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 23:23:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 23:23:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-06 23:23:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-06 23:23:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-06 23:23:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-06 23:23:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 23:23:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 23:23:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 23:23:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 23:23:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 23:23:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 23:23:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_enable_access [2021-12-06 23:23:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_enable_access [2021-12-06 23:23:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-12-06 23:23:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-12-06 23:23:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_write [2021-12-06 23:23:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_write [2021-12-06 23:23:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-06 23:23:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-06 23:23:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-06 23:23:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-06 23:23:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-12-06 23:23:05,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-12-06 23:23:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-12-06 23:23:05,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-12-06 23:23:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 23:23:05,870 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 23:23:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 23:23:05,870 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 23:23:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-06 23:23:05,871 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-06 23:23:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-06 23:23:05,871 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-06 23:23:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-06 23:23:05,871 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-06 23:23:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-06 23:23:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-06 23:23:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-06 23:23:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-06 23:23:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:23:05,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:23:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_multicast_list [2021-12-06 23:23:05,872 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_multicast_list [2021-12-06 23:23:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:23:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-06 23:23:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-06 23:23:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-06 23:23:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-06 23:23:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_alloc_rx_buffer [2021-12-06 23:23:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_alloc_rx_buffer [2021-12-06 23:23:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:23:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-06 23:23:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-06 23:23:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_rx [2021-12-06 23:23:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_rx [2021-12-06 23:23:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-06 23:23:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-06 23:23:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 23:23:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 23:23:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:23:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 23:23:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-06 23:23:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-06 23:23:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-06 23:23:05,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-06 23:23:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-06 23:23:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-12-06 23:23:05,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-12-06 23:23:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_isr [2021-12-06 23:23:05,875 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_isr [2021-12-06 23:23:05,876 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-12-06 23:23:05,876 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-12-06 23:23:05,876 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_do_ioctl [2021-12-06 23:23:05,876 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_do_ioctl [2021-12-06 23:23:05,876 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_poll_controller [2021-12-06 23:23:05,876 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_poll_controller [2021-12-06 23:23:05,876 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-06 23:23:05,876 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-06 23:23:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-12-06 23:23:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-12-06 23:23:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 23:23:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 23:23:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_tx [2021-12-06 23:23:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_tx [2021-12-06 23:23:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-06 23:23:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-06 23:23:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 23:23:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 23:23:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-06 23:23:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_tx_ring [2021-12-06 23:23:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_tx_ring [2021-12-06 23:23:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-06 23:23:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-06 23:23:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_pci_flush_write [2021-12-06 23:23:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_pci_flush_write [2021-12-06 23:23:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:23:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:23:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 23:23:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 23:23:06,350 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:23:06,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:23:06,911 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 23:23:39,090 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:23:39,108 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:23:39,108 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:23:39,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:23:39 BoogieIcfgContainer [2021-12-06 23:23:39,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:23:39,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:23:39,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:23:39,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:23:39,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:23:03" (1/3) ... [2021-12-06 23:23:39,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d396d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:23:39, skipping insertion in model container [2021-12-06 23:23:39,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:23:05" (2/3) ... [2021-12-06 23:23:39,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d396d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:23:39, skipping insertion in model container [2021-12-06 23:23:39,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:23:39" (3/3) ... [2021-12-06 23:23:39,120 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-12-06 23:23:39,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:23:39,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:23:39,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:23:39,185 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:23:39,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:23:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2021-12-06 23:23:39,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 23:23:39,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:39,246 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:39,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:39,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash 934868167, now seen corresponding path program 1 times [2021-12-06 23:23:39,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:39,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494786578] [2021-12-06 23:23:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:23:39,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:39,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:39,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:23:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:39,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:23:39,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-06 23:23:40,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:23:40,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494786578] [2021-12-06 23:23:40,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494786578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:23:40,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:23:40,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:23:40,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586515549] [2021-12-06 23:23:40,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:23:40,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:23:40,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:23:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:40,085 INFO L87 Difference]: Start difference. First operand has 1610 states, 1116 states have (on average 1.3387096774193548) internal successors, (1494), 1143 states have internal predecessors, (1494), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:23:40,247 INFO L93 Difference]: Finished difference Result 3216 states and 4662 transitions. [2021-12-06 23:23:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:23:40,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2021-12-06 23:23:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:23:40,275 INFO L225 Difference]: With dead ends: 3216 [2021-12-06 23:23:40,275 INFO L226 Difference]: Without dead ends: 1571 [2021-12-06 23:23:40,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:40,291 INFO L933 BasicCegarLoop]: 2310 mSDtfsCounter, 0 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:23:40,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4618 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:23:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-12-06 23:23:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2021-12-06 23:23:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1086 states have (on average 1.3130755064456723) internal successors, (1426), 1104 states have internal predecessors, (1426), 408 states have call successors, (408), 77 states have call predecessors, (408), 76 states have return successors, (407), 404 states have call predecessors, (407), 407 states have call successors, (407) [2021-12-06 23:23:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2241 transitions. [2021-12-06 23:23:40,447 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2241 transitions. Word has length 80 [2021-12-06 23:23:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:23:40,449 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2241 transitions. [2021-12-06 23:23:40,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2241 transitions. [2021-12-06 23:23:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 23:23:40,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:40,455 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:40,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:23:40,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:23:40,656 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:40,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:40,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1121554641, now seen corresponding path program 1 times [2021-12-06 23:23:40,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:40,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635936145] [2021-12-06 23:23:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:23:40,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:40,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:40,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:40,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:23:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:41,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:23:41,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-06 23:23:41,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:23:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-06 23:23:41,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635936145] [2021-12-06 23:23:41,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635936145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:23:41,520 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:23:41,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 23:23:41,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814509179] [2021-12-06 23:23:41,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:23:41,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:23:41,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:23:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:23:41,522 INFO L87 Difference]: Start difference. First operand 1571 states and 2241 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:23:41,756 INFO L93 Difference]: Finished difference Result 3119 states and 4451 transitions. [2021-12-06 23:23:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:23:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 81 [2021-12-06 23:23:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:23:41,767 INFO L225 Difference]: With dead ends: 3119 [2021-12-06 23:23:41,767 INFO L226 Difference]: Without dead ends: 1574 [2021-12-06 23:23:41,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:23:41,773 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 0 mSDsluCounter, 6711 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8950 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:23:41,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8950 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:23:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-12-06 23:23:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1574. [2021-12-06 23:23:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1089 states have (on average 1.3122130394857667) internal successors, (1429), 1107 states have internal predecessors, (1429), 408 states have call successors, (408), 77 states have call predecessors, (408), 76 states have return successors, (407), 404 states have call predecessors, (407), 407 states have call successors, (407) [2021-12-06 23:23:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2244 transitions. [2021-12-06 23:23:41,829 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2244 transitions. Word has length 81 [2021-12-06 23:23:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:23:41,829 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 2244 transitions. [2021-12-06 23:23:41,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2244 transitions. [2021-12-06 23:23:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 23:23:41,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:41,833 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:41,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:23:42,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:23:42,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1225041735, now seen corresponding path program 2 times [2021-12-06 23:23:42,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561363525] [2021-12-06 23:23:42,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:23:42,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:42,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:42,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:42,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:23:42,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 23:23:42,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:23:42,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:23:42,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 23:23:42,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:23:42,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:42,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561363525] [2021-12-06 23:23:42,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561363525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:23:42,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:23:42,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:23:42,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697197649] [2021-12-06 23:23:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:23:42,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:23:42,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:23:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:42,650 INFO L87 Difference]: Start difference. First operand 1574 states and 2244 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:23:42,881 INFO L93 Difference]: Finished difference Result 4638 states and 6620 transitions. [2021-12-06 23:23:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:23:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 84 [2021-12-06 23:23:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:23:42,906 INFO L225 Difference]: With dead ends: 4638 [2021-12-06 23:23:42,906 INFO L226 Difference]: Without dead ends: 3094 [2021-12-06 23:23:42,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:42,914 INFO L933 BasicCegarLoop]: 2648 mSDtfsCounter, 2171 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:23:42,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2171 Valid, 4869 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:23:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-12-06 23:23:43,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3094. [2021-12-06 23:23:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2140 states have (on average 1.3144859813084113) internal successors, (2813), 2176 states have internal predecessors, (2813), 801 states have call successors, (801), 153 states have call predecessors, (801), 152 states have return successors, (800), 794 states have call predecessors, (800), 800 states have call successors, (800) [2021-12-06 23:23:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4414 transitions. [2021-12-06 23:23:43,088 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4414 transitions. Word has length 84 [2021-12-06 23:23:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:23:43,088 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 4414 transitions. [2021-12-06 23:23:43,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4414 transitions. [2021-12-06 23:23:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 23:23:43,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:43,091 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:43,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-06 23:23:43,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:23:43,292 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:43,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1801508975, now seen corresponding path program 1 times [2021-12-06 23:23:43,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:43,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553061631] [2021-12-06 23:23:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:23:43,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:43,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:43,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:43,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:23:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:43,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:23:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 23:23:44,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:23:44,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:44,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553061631] [2021-12-06 23:23:44,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553061631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:23:44,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:23:44,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:23:44,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243468655] [2021-12-06 23:23:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:23:44,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:23:44,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:23:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:23:44,022 INFO L87 Difference]: Start difference. First operand 3094 states and 4414 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:44,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:23:44,418 INFO L93 Difference]: Finished difference Result 9219 states and 13174 transitions. [2021-12-06 23:23:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:23:44,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 89 [2021-12-06 23:23:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:23:44,453 INFO L225 Difference]: With dead ends: 9219 [2021-12-06 23:23:44,453 INFO L226 Difference]: Without dead ends: 6150 [2021-12-06 23:23:44,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:23:44,465 INFO L933 BasicCegarLoop]: 2683 mSDtfsCounter, 2215 mSDsluCounter, 7567 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 10250 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:23:44,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2215 Valid, 10250 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:23:44,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-12-06 23:23:44,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 6150. [2021-12-06 23:23:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6150 states, 4254 states have (on average 1.314997649271274) internal successors, (5594), 4326 states have internal predecessors, (5594), 1591 states have call successors, (1591), 305 states have call predecessors, (1591), 304 states have return successors, (1598), 1578 states have call predecessors, (1598), 1590 states have call successors, (1598) [2021-12-06 23:23:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6150 states to 6150 states and 8783 transitions. [2021-12-06 23:23:44,822 INFO L78 Accepts]: Start accepts. Automaton has 6150 states and 8783 transitions. Word has length 89 [2021-12-06 23:23:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:23:44,823 INFO L470 AbstractCegarLoop]: Abstraction has 6150 states and 8783 transitions. [2021-12-06 23:23:44,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:23:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6150 states and 8783 transitions. [2021-12-06 23:23:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-12-06 23:23:44,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:44,854 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:44,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 23:23:45,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:23:45,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:45,055 INFO L85 PathProgramCache]: Analyzing trace with hash -420332833, now seen corresponding path program 1 times [2021-12-06 23:23:45,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:45,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412057015] [2021-12-06 23:23:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:23:45,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:45,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:45,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:23:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:46,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:23:46,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2021-12-06 23:23:47,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:23:47,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:47,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412057015] [2021-12-06 23:23:47,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412057015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:23:47,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:23:47,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:23:47,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710252546] [2021-12-06 23:23:47,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:23:47,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:23:47,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:23:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:47,371 INFO L87 Difference]: Start difference. First operand 6150 states and 8783 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-12-06 23:23:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:23:47,902 INFO L93 Difference]: Finished difference Result 17146 states and 24421 transitions. [2021-12-06 23:23:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:23:47,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 471 [2021-12-06 23:23:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:23:47,965 INFO L225 Difference]: With dead ends: 17146 [2021-12-06 23:23:47,965 INFO L226 Difference]: Without dead ends: 11026 [2021-12-06 23:23:47,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:47,989 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 1800 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 4672 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:23:47,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 4672 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:23:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11026 states. [2021-12-06 23:23:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11026 to 10966. [2021-12-06 23:23:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10966 states, 7590 states have (on average 1.3155467720685112) internal successors, (9985), 7750 states have internal predecessors, (9985), 2799 states have call successors, (2799), 577 states have call predecessors, (2799), 576 states have return successors, (2820), 2754 states have call predecessors, (2820), 2798 states have call successors, (2820) [2021-12-06 23:23:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10966 states to 10966 states and 15604 transitions. [2021-12-06 23:23:48,394 INFO L78 Accepts]: Start accepts. Automaton has 10966 states and 15604 transitions. Word has length 471 [2021-12-06 23:23:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:23:48,395 INFO L470 AbstractCegarLoop]: Abstraction has 10966 states and 15604 transitions. [2021-12-06 23:23:48,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-12-06 23:23:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10966 states and 15604 transitions. [2021-12-06 23:23:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-12-06 23:23:48,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:48,424 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:48,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 23:23:48,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:23:48,625 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1063400336, now seen corresponding path program 1 times [2021-12-06 23:23:48,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:48,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000491947] [2021-12-06 23:23:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:23:48,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:48,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:48,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:48,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:23:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:50,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:23:50,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-12-06 23:23:50,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:23:50,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:50,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000491947] [2021-12-06 23:23:50,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000491947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:23:50,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:23:50,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:23:50,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311570947] [2021-12-06 23:23:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:23:50,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:23:50,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:23:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:50,926 INFO L87 Difference]: Start difference. First operand 10966 states and 15604 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-12-06 23:23:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:23:51,445 INFO L93 Difference]: Finished difference Result 28123 states and 40036 transitions. [2021-12-06 23:23:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:23:51,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 517 [2021-12-06 23:23:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:23:51,511 INFO L225 Difference]: With dead ends: 28123 [2021-12-06 23:23:51,512 INFO L226 Difference]: Without dead ends: 17187 [2021-12-06 23:23:51,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:51,543 INFO L933 BasicCegarLoop]: 3475 mSDtfsCounter, 1766 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:23:51,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 5660 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:23:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17187 states. [2021-12-06 23:23:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17187 to 17179. [2021-12-06 23:23:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17179 states, 11943 states have (on average 1.3216947165703758) internal successors, (15785), 12159 states have internal predecessors, (15785), 4323 states have call successors, (4323), 913 states have call predecessors, (4323), 912 states have return successors, (4350), 4266 states have call predecessors, (4350), 4322 states have call successors, (4350) [2021-12-06 23:23:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17179 states to 17179 states and 24458 transitions. [2021-12-06 23:23:52,188 INFO L78 Accepts]: Start accepts. Automaton has 17179 states and 24458 transitions. Word has length 517 [2021-12-06 23:23:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:23:52,188 INFO L470 AbstractCegarLoop]: Abstraction has 17179 states and 24458 transitions. [2021-12-06 23:23:52,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-12-06 23:23:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 17179 states and 24458 transitions. [2021-12-06 23:23:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-12-06 23:23:52,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:52,251 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:52,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:23:52,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:23:52,452 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash 775553112, now seen corresponding path program 1 times [2021-12-06 23:23:52,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:52,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841320277] [2021-12-06 23:23:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:23:52,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:52,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:52,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:52,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:23:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:53,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:23:53,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2021-12-06 23:23:54,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:23:54,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:54,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841320277] [2021-12-06 23:23:54,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841320277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:23:54,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:23:54,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:23:54,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373184557] [2021-12-06 23:23:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:23:54,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:23:54,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:23:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:54,763 INFO L87 Difference]: Start difference. First operand 17179 states and 24458 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2021-12-06 23:23:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:23:55,384 INFO L93 Difference]: Finished difference Result 41041 states and 58352 transitions. [2021-12-06 23:23:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:23:55,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) Word has length 552 [2021-12-06 23:23:55,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:23:55,450 INFO L225 Difference]: With dead ends: 41041 [2021-12-06 23:23:55,450 INFO L226 Difference]: Without dead ends: 23913 [2021-12-06 23:23:55,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:23:55,484 INFO L933 BasicCegarLoop]: 3939 mSDtfsCounter, 2007 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5916 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:23:55,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5916 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:23:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23913 states. [2021-12-06 23:23:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23913 to 23849. [2021-12-06 23:23:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23849 states, 16633 states have (on average 1.3228521613659592) internal successors, (22003), 16901 states have internal predecessors, (22003), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2021-12-06 23:23:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23849 states to 23849 states and 33846 transitions. [2021-12-06 23:23:56,286 INFO L78 Accepts]: Start accepts. Automaton has 23849 states and 33846 transitions. Word has length 552 [2021-12-06 23:23:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:23:56,286 INFO L470 AbstractCegarLoop]: Abstraction has 23849 states and 33846 transitions. [2021-12-06 23:23:56,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2021-12-06 23:23:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 23849 states and 33846 transitions. [2021-12-06 23:23:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-12-06 23:23:56,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:23:56,320 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 10, 10, 10, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:23:56,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 23:23:56,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:23:56,521 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:23:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:23:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash 272930517, now seen corresponding path program 1 times [2021-12-06 23:23:56,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:23:56,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838697868] [2021-12-06 23:23:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:23:56,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:23:56,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:23:56,524 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:23:56,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 23:23:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:23:58,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:23:58,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:23:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2021-12-06 23:23:58,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:23:58,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:23:58,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838697868] [2021-12-06 23:23:58,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838697868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:23:58,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:23:58,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:23:58,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461925097] [2021-12-06 23:23:58,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:23:58,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:23:58,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:23:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:23:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:23:58,851 INFO L87 Difference]: Start difference. First operand 23849 states and 33846 transitions. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-12-06 23:24:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:24:00,113 INFO L93 Difference]: Finished difference Result 55601 states and 78910 transitions. [2021-12-06 23:24:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:24:00,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 575 [2021-12-06 23:24:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:24:00,227 INFO L225 Difference]: With dead ends: 55601 [2021-12-06 23:24:00,227 INFO L226 Difference]: Without dead ends: 31803 [2021-12-06 23:24:00,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:24:00,274 INFO L933 BasicCegarLoop]: 4170 mSDtfsCounter, 2351 mSDsluCounter, 5984 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 10154 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:24:00,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2351 Valid, 10154 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:24:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31803 states. [2021-12-06 23:24:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31803 to 23857. [2021-12-06 23:24:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23857 states, 16641 states have (on average 1.3224565831380326) internal successors, (22007), 16909 states have internal predecessors, (22007), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2021-12-06 23:24:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23857 states to 23857 states and 33850 transitions. [2021-12-06 23:24:01,140 INFO L78 Accepts]: Start accepts. Automaton has 23857 states and 33850 transitions. Word has length 575 [2021-12-06 23:24:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:24:01,140 INFO L470 AbstractCegarLoop]: Abstraction has 23857 states and 33850 transitions. [2021-12-06 23:24:01,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-12-06 23:24:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 23857 states and 33850 transitions. [2021-12-06 23:24:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2021-12-06 23:24:01,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:24:01,175 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:24:01,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 23:24:01,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:24:01,376 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:24:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:24:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1315275553, now seen corresponding path program 1 times [2021-12-06 23:24:01,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:24:01,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026448705] [2021-12-06 23:24:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:24:01,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:24:01,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:24:01,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:24:01,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 23:24:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:24:03,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:24:03,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:24:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1777 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2021-12-06 23:24:04,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:24:04,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:24:04,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026448705] [2021-12-06 23:24:04,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026448705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:24:04,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:24:04,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:24:04,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143802014] [2021-12-06 23:24:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:24:04,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:24:04,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:24:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:24:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:24:04,549 INFO L87 Difference]: Start difference. First operand 23857 states and 33850 transitions. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) [2021-12-06 23:24:06,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:24:07,742 INFO L93 Difference]: Finished difference Result 52515 states and 75221 transitions. [2021-12-06 23:24:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:24:07,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) Word has length 709 [2021-12-06 23:24:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:24:07,833 INFO L225 Difference]: With dead ends: 52515 [2021-12-06 23:24:07,833 INFO L226 Difference]: Without dead ends: 28709 [2021-12-06 23:24:07,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:24:07,879 INFO L933 BasicCegarLoop]: 2981 mSDtfsCounter, 1263 mSDsluCounter, 11172 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 208 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 14153 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:24:07,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 14153 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 23:24:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28709 states. [2021-12-06 23:24:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28709 to 23897. [2021-12-06 23:24:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23897 states, 16673 states have (on average 1.3218377016733642) internal successors, (22039), 16941 states have internal predecessors, (22039), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1318 states have return successors, (5966), 5844 states have call predecessors, (5966), 5904 states have call successors, (5966) [2021-12-06 23:24:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23897 states to 23897 states and 33910 transitions. [2021-12-06 23:24:08,777 INFO L78 Accepts]: Start accepts. Automaton has 23897 states and 33910 transitions. Word has length 709 [2021-12-06 23:24:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:24:08,778 INFO L470 AbstractCegarLoop]: Abstraction has 23897 states and 33910 transitions. [2021-12-06 23:24:08,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 2 states have call successors, (93), 2 states have call predecessors, (93), 3 states have return successors, (92), 3 states have call predecessors, (92), 2 states have call successors, (92) [2021-12-06 23:24:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 23897 states and 33910 transitions. [2021-12-06 23:24:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2021-12-06 23:24:08,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:24:08,817 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:24:08,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-06 23:24:09,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:24:09,018 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:24:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:24:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2113028057, now seen corresponding path program 1 times [2021-12-06 23:24:09,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:24:09,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628707251] [2021-12-06 23:24:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:24:09,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:24:09,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:24:09,022 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:24:09,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 23:24:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:24:10,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 3370 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:24:10,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:24:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1781 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-12-06 23:24:12,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:24:12,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:24:12,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628707251] [2021-12-06 23:24:12,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628707251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:24:12,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:24:12,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:24:12,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614635568] [2021-12-06 23:24:12,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:24:12,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:24:12,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:24:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:24:12,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:24:12,194 INFO L87 Difference]: Start difference. First operand 23897 states and 33910 transitions. Second operand has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 6 states have internal predecessors, (299), 2 states have call successors, (97), 2 states have call predecessors, (97), 3 states have return successors, (96), 3 states have call predecessors, (96), 2 states have call successors, (96) [2021-12-06 23:24:14,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:24:15,232 INFO L93 Difference]: Finished difference Result 49559 states and 70551 transitions. [2021-12-06 23:24:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:24:15,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 6 states have internal predecessors, (299), 2 states have call successors, (97), 2 states have call predecessors, (97), 3 states have return successors, (96), 3 states have call predecessors, (96), 2 states have call successors, (96) Word has length 729 [2021-12-06 23:24:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:24:15,343 INFO L225 Difference]: With dead ends: 49559 [2021-12-06 23:24:15,343 INFO L226 Difference]: Without dead ends: 25713 [2021-12-06 23:24:15,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:24:15,387 INFO L933 BasicCegarLoop]: 2651 mSDtfsCounter, 1289 mSDsluCounter, 12473 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 235 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 15124 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:24:15,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 15124 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 23:24:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25713 states. [2021-12-06 23:24:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25713 to 23913. [2021-12-06 23:24:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23913 states, 16689 states have (on average 1.3215291509377434) internal successors, (22055), 16953 states have internal predecessors, (22055), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1318 states have return successors, (5966), 5848 states have call predecessors, (5966), 5904 states have call successors, (5966) [2021-12-06 23:24:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23913 states to 23913 states and 33926 transitions. [2021-12-06 23:24:16,241 INFO L78 Accepts]: Start accepts. Automaton has 23913 states and 33926 transitions. Word has length 729 [2021-12-06 23:24:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:24:16,241 INFO L470 AbstractCegarLoop]: Abstraction has 23913 states and 33926 transitions. [2021-12-06 23:24:16,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 6 states have internal predecessors, (299), 2 states have call successors, (97), 2 states have call predecessors, (97), 3 states have return successors, (96), 3 states have call predecessors, (96), 2 states have call successors, (96) [2021-12-06 23:24:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 23913 states and 33926 transitions. [2021-12-06 23:24:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-12-06 23:24:16,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:24:16,273 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:24:16,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 23:24:16,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:24:16,475 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:24:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:24:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1145833885, now seen corresponding path program 1 times [2021-12-06 23:24:16,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:24:16,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183342610] [2021-12-06 23:24:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:24:16,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:24:16,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:24:16,487 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:24:16,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 23:24:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:24:18,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3413 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:24:18,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:24:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 320 proven. 6 refuted. 0 times theorem prover too weak. 1487 trivial. 0 not checked. [2021-12-06 23:24:19,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:24:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2021-12-06 23:24:21,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:24:21,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183342610] [2021-12-06 23:24:21,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183342610] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:24:21,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:24:21,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-06 23:24:21,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442558621] [2021-12-06 23:24:21,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:24:21,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:24:21,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:24:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:24:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:24:21,203 INFO L87 Difference]: Start difference. First operand 23913 states and 33926 transitions. Second operand has 12 states, 12 states have (on average 40.166666666666664) internal successors, (482), 10 states have internal predecessors, (482), 6 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 8 states have call predecessors, (178), 6 states have call successors, (178) [2021-12-06 23:24:24,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:26,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:28,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:30,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:32,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:34,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:36,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:38,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:24:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:24:56,602 INFO L93 Difference]: Finished difference Result 102392 states and 149863 transitions. [2021-12-06 23:24:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:24:56,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 40.166666666666664) internal successors, (482), 10 states have internal predecessors, (482), 6 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 8 states have call predecessors, (178), 6 states have call successors, (178) Word has length 749 [2021-12-06 23:24:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:24:56,818 INFO L225 Difference]: With dead ends: 102392 [2021-12-06 23:24:56,818 INFO L226 Difference]: Without dead ends: 78530 [2021-12-06 23:24:56,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1493 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2021-12-06 23:24:56,882 INFO L933 BasicCegarLoop]: 4915 mSDtfsCounter, 8888 mSDsluCounter, 35411 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 3492 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9298 SdHoareTripleChecker+Valid, 40326 SdHoareTripleChecker+Invalid, 7114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3492 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:24:56,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9298 Valid, 40326 Invalid, 7114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3492 Valid, 3615 Invalid, 7 Unknown, 0 Unchecked, 31.6s Time] [2021-12-06 23:24:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78530 states. [2021-12-06 23:24:59,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78530 to 47783. [2021-12-06 23:24:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47783 states, 33347 states have (on average 1.321528173448886) internal successors, (44069), 33883 states have internal predecessors, (44069), 11795 states have call successors, (11795), 2617 states have call predecessors, (11795), 2640 states have return successors, (11958), 11682 states have call predecessors, (11958), 11794 states have call successors, (11958) [2021-12-06 23:24:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47783 states to 47783 states and 67822 transitions. [2021-12-06 23:24:59,428 INFO L78 Accepts]: Start accepts. Automaton has 47783 states and 67822 transitions. Word has length 749 [2021-12-06 23:24:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:24:59,429 INFO L470 AbstractCegarLoop]: Abstraction has 47783 states and 67822 transitions. [2021-12-06 23:24:59,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.166666666666664) internal successors, (482), 10 states have internal predecessors, (482), 6 states have call successors, (178), 3 states have call predecessors, (178), 5 states have return successors, (178), 8 states have call predecessors, (178), 6 states have call successors, (178) [2021-12-06 23:24:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 47783 states and 67822 transitions. [2021-12-06 23:24:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-12-06 23:24:59,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:24:59,492 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:24:59,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 23:24:59,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:24:59,694 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:24:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:24:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash -235595233, now seen corresponding path program 1 times [2021-12-06 23:24:59,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:24:59,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227550740] [2021-12-06 23:24:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:24:59,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:24:59,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:24:59,706 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:24:59,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 23:25:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:25:01,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 3413 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:25:01,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:25:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2021-12-06 23:25:02,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:25:02,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:25:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227550740] [2021-12-06 23:25:02,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227550740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:25:02,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:25:02,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:25:02,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005391175] [2021-12-06 23:25:02,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:25:02,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:25:02,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:25:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:25:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:25:02,959 INFO L87 Difference]: Start difference. First operand 47783 states and 67822 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2021-12-06 23:25:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:25:04,488 INFO L93 Difference]: Finished difference Result 95691 states and 135829 transitions. [2021-12-06 23:25:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:25:04,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) Word has length 749 [2021-12-06 23:25:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:25:04,629 INFO L225 Difference]: With dead ends: 95691 [2021-12-06 23:25:04,629 INFO L226 Difference]: Without dead ends: 47959 [2021-12-06 23:25:04,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:25:04,725 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 26 mSDsluCounter, 4468 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6707 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:25:04,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 6707 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:25:04,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47959 states. [2021-12-06 23:25:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47959 to 47815. [2021-12-06 23:25:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47815 states, 33371 states have (on average 1.3210572053579455) internal successors, (44085), 33907 states have internal predecessors, (44085), 11803 states have call successors, (11803), 2617 states have call predecessors, (11803), 2640 states have return successors, (11966), 11690 states have call predecessors, (11966), 11802 states have call successors, (11966) [2021-12-06 23:25:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47815 states to 47815 states and 67854 transitions. [2021-12-06 23:25:07,100 INFO L78 Accepts]: Start accepts. Automaton has 47815 states and 67854 transitions. Word has length 749 [2021-12-06 23:25:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:25:07,101 INFO L470 AbstractCegarLoop]: Abstraction has 47815 states and 67854 transitions. [2021-12-06 23:25:07,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2021-12-06 23:25:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 47815 states and 67854 transitions. [2021-12-06 23:25:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-12-06 23:25:07,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:25:07,179 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:25:07,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 23:25:07,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:25:07,381 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:25:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:25:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2052465123, now seen corresponding path program 1 times [2021-12-06 23:25:07,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:25:07,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589458144] [2021-12-06 23:25:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:25:07,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:25:07,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:25:07,397 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:25:07,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 23:25:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:25:09,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 3415 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 23:25:09,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:25:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 341 proven. 6 refuted. 0 times theorem prover too weak. 1466 trivial. 0 not checked. [2021-12-06 23:25:10,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:25:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-12-06 23:25:11,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:25:11,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589458144] [2021-12-06 23:25:11,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589458144] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:25:11,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:25:11,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 23:25:11,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994816183] [2021-12-06 23:25:11,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:25:11,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:25:11,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:25:11,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:25:11,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:25:11,756 INFO L87 Difference]: Start difference. First operand 47815 states and 67854 transitions. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-12-06 23:25:14,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:15,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:25:15,751 INFO L93 Difference]: Finished difference Result 97589 states and 138725 transitions. [2021-12-06 23:25:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:25:15,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 749 [2021-12-06 23:25:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:25:15,889 INFO L225 Difference]: With dead ends: 97589 [2021-12-06 23:25:15,889 INFO L226 Difference]: Without dead ends: 49825 [2021-12-06 23:25:15,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1499 GetRequests, 1487 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:25:15,974 INFO L933 BasicCegarLoop]: 2621 mSDtfsCounter, 558 mSDsluCounter, 7197 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 107 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 9818 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:25:15,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 9818 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 23:25:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49825 states. [2021-12-06 23:25:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49825 to 47839. [2021-12-06 23:25:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47839 states, 33395 states have (on average 1.320826471028597) internal successors, (44109), 33931 states have internal predecessors, (44109), 11803 states have call successors, (11803), 2617 states have call predecessors, (11803), 2640 states have return successors, (11966), 11690 states have call predecessors, (11966), 11802 states have call successors, (11966) [2021-12-06 23:25:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47839 states to 47839 states and 67878 transitions. [2021-12-06 23:25:18,121 INFO L78 Accepts]: Start accepts. Automaton has 47839 states and 67878 transitions. Word has length 749 [2021-12-06 23:25:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:25:18,121 INFO L470 AbstractCegarLoop]: Abstraction has 47839 states and 67878 transitions. [2021-12-06 23:25:18,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-12-06 23:25:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 47839 states and 67878 transitions. [2021-12-06 23:25:18,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2021-12-06 23:25:18,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:25:18,184 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:25:18,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 23:25:18,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:25:18,385 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:25:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:25:18,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1273217471, now seen corresponding path program 1 times [2021-12-06 23:25:18,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:25:18,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683992298] [2021-12-06 23:25:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:25:18,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:25:18,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:25:18,388 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:25:18,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 23:25:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:25:20,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 3475 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:25:20,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:25:22,811 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:25:22,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 21 [2021-12-06 23:25:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 1570 trivial. 0 not checked. [2021-12-06 23:25:28,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:25:28,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:25:28,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683992298] [2021-12-06 23:25:28,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683992298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:25:28,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:25:28,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:25:28,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054605300] [2021-12-06 23:25:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:25:28,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:25:28,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:25:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:25:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=17, Unknown=3, NotChecked=0, Total=30 [2021-12-06 23:25:28,197 INFO L87 Difference]: Start difference. First operand 47839 states and 67878 transitions. Second operand has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 3 states have call successors, (97), 3 states have call predecessors, (97), 3 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2021-12-06 23:25:31,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:33,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:36,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:37,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:45,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:47,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:56,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:25:58,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:01,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:04,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:06,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:09,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:11,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:14,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:16,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:18,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:20,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:22,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:24,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:28,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:30,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:32,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:34,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:26:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:26:35,413 INFO L93 Difference]: Finished difference Result 99877 states and 141795 transitions. [2021-12-06 23:26:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:26:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 3 states have call successors, (97), 3 states have call predecessors, (97), 3 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) Word has length 759 [2021-12-06 23:26:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:26:35,569 INFO L225 Difference]: With dead ends: 99877 [2021-12-06 23:26:35,569 INFO L226 Difference]: Without dead ends: 52089 [2021-12-06 23:26:35,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 753 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=15, Invalid=24, Unknown=3, NotChecked=0, Total=42 [2021-12-06 23:26:35,658 INFO L933 BasicCegarLoop]: 2736 mSDtfsCounter, 621 mSDsluCounter, 9283 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 0 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 12019 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 924 IncrementalHoareTripleChecker+Unchecked, 63.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:26:35,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 12019 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 465 Invalid, 20 Unknown, 924 Unchecked, 63.8s Time] [2021-12-06 23:26:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52089 states. [2021-12-06 23:26:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52089 to 51351. [2021-12-06 23:26:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51351 states, 36109 states have (on average 1.3247666786673682) internal successors, (47836), 36719 states have internal predecessors, (47836), 12389 states have call successors, (12389), 2821 states have call predecessors, (12389), 2852 states have return successors, (12610), 12226 states have call predecessors, (12610), 12388 states have call successors, (12610) [2021-12-06 23:26:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51351 states to 51351 states and 72835 transitions. [2021-12-06 23:26:38,012 INFO L78 Accepts]: Start accepts. Automaton has 51351 states and 72835 transitions. Word has length 759 [2021-12-06 23:26:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:26:38,013 INFO L470 AbstractCegarLoop]: Abstraction has 51351 states and 72835 transitions. [2021-12-06 23:26:38,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 3 states have call successors, (97), 3 states have call predecessors, (97), 3 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2021-12-06 23:26:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 51351 states and 72835 transitions. [2021-12-06 23:26:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2021-12-06 23:26:38,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:26:38,081 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:26:38,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 23:26:38,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:26:38,283 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:26:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:26:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1458326017, now seen corresponding path program 1 times [2021-12-06 23:26:38,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:26:38,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834734570] [2021-12-06 23:26:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:26:38,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:26:38,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:26:38,295 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:26:38,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 23:26:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:26:40,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 3475 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:26:40,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:26:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2021-12-06 23:26:41,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:26:41,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:26:41,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834734570] [2021-12-06 23:26:41,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834734570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:26:41,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:26:41,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:26:41,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144011718] [2021-12-06 23:26:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:26:41,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:26:41,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:26:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:26:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:26:41,659 INFO L87 Difference]: Start difference. First operand 51351 states and 72835 transitions. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 5 states have internal predecessors, (328), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (100), 3 states have call predecessors, (100), 2 states have call successors, (100) [2021-12-06 23:26:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:26:44,215 INFO L93 Difference]: Finished difference Result 121553 states and 175262 transitions. [2021-12-06 23:26:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:26:44,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 5 states have internal predecessors, (328), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (100), 3 states have call predecessors, (100), 2 states have call successors, (100) Word has length 759 [2021-12-06 23:26:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:26:44,460 INFO L225 Difference]: With dead ends: 121553 [2021-12-06 23:26:44,460 INFO L226 Difference]: Without dead ends: 70253 [2021-12-06 23:26:44,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:26:44,552 INFO L933 BasicCegarLoop]: 3143 mSDtfsCounter, 616 mSDsluCounter, 11791 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 14934 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:26:44,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 14934 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:26:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70253 states. [2021-12-06 23:26:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70253 to 51431. [2021-12-06 23:26:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51431 states, 36173 states have (on average 1.324192076963481) internal successors, (47900), 36783 states have internal predecessors, (47900), 12389 states have call successors, (12389), 2821 states have call predecessors, (12389), 2868 states have return successors, (12650), 12242 states have call predecessors, (12650), 12388 states have call successors, (12650) [2021-12-06 23:26:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51431 states to 51431 states and 72939 transitions. [2021-12-06 23:26:47,199 INFO L78 Accepts]: Start accepts. Automaton has 51431 states and 72939 transitions. Word has length 759 [2021-12-06 23:26:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:26:47,200 INFO L470 AbstractCegarLoop]: Abstraction has 51431 states and 72939 transitions. [2021-12-06 23:26:47,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 5 states have internal predecessors, (328), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (100), 3 states have call predecessors, (100), 2 states have call successors, (100) [2021-12-06 23:26:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 51431 states and 72939 transitions. [2021-12-06 23:26:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2021-12-06 23:26:47,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:26:47,269 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:26:47,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 23:26:47,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:26:47,470 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:26:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:26:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1963541631, now seen corresponding path program 1 times [2021-12-06 23:26:47,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:26:47,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668297734] [2021-12-06 23:26:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:26:47,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:26:47,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:26:47,482 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:26:47,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 23:26:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:26:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:26:49,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:26:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2021-12-06 23:26:50,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:26:50,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:26:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668297734] [2021-12-06 23:26:50,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668297734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:26:50,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:26:50,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:26:50,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462572443] [2021-12-06 23:26:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:26:50,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:26:50,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:26:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:26:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:26:50,795 INFO L87 Difference]: Start difference. First operand 51431 states and 72939 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 2 states have call successors, (101), 2 states have call predecessors, (101), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2021-12-06 23:26:52,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:26:52,554 INFO L93 Difference]: Finished difference Result 102971 states and 146203 transitions. [2021-12-06 23:26:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:26:52,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 2 states have call successors, (101), 2 states have call predecessors, (101), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 762 [2021-12-06 23:26:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:26:52,721 INFO L225 Difference]: With dead ends: 102971 [2021-12-06 23:26:52,721 INFO L226 Difference]: Without dead ends: 51591 [2021-12-06 23:26:52,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:26:52,862 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 3 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:26:52,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4474 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:26:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51591 states. [2021-12-06 23:26:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51591 to 51471. [2021-12-06 23:26:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51471 states, 36213 states have (on average 1.32383398227156) internal successors, (47940), 36823 states have internal predecessors, (47940), 12389 states have call successors, (12389), 2821 states have call predecessors, (12389), 2868 states have return successors, (12650), 12242 states have call predecessors, (12650), 12388 states have call successors, (12650) [2021-12-06 23:26:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51471 states to 51471 states and 72979 transitions. [2021-12-06 23:26:55,437 INFO L78 Accepts]: Start accepts. Automaton has 51471 states and 72979 transitions. Word has length 762 [2021-12-06 23:26:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:26:55,437 INFO L470 AbstractCegarLoop]: Abstraction has 51471 states and 72979 transitions. [2021-12-06 23:26:55,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 2 states have call successors, (101), 2 states have call predecessors, (101), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2021-12-06 23:26:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 51471 states and 72979 transitions. [2021-12-06 23:26:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2021-12-06 23:26:55,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:26:55,559 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:26:55,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 23:26:55,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:26:55,761 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:26:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:26:55,762 INFO L85 PathProgramCache]: Analyzing trace with hash -794178793, now seen corresponding path program 1 times [2021-12-06 23:26:55,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:26:55,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574950569] [2021-12-06 23:26:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:26:55,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:26:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:26:55,773 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:26:55,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 23:26:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:26:58,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 3632 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:26:58,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:26:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1792 backedges. 536 proven. 0 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2021-12-06 23:26:59,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:26:59,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:26:59,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574950569] [2021-12-06 23:26:59,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574950569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:26:59,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:26:59,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:26:59,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091499229] [2021-12-06 23:26:59,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:26:59,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:26:59,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:26:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:26:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:26:59,677 INFO L87 Difference]: Start difference. First operand 51471 states and 72979 transitions. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 5 states have internal predecessors, (334), 2 states have call successors, (103), 2 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) [2021-12-06 23:27:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:02,404 INFO L93 Difference]: Finished difference Result 121745 states and 175478 transitions. [2021-12-06 23:27:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:27:02,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 5 states have internal predecessors, (334), 2 states have call successors, (103), 2 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) Word has length 761 [2021-12-06 23:27:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:02,604 INFO L225 Difference]: With dead ends: 121745 [2021-12-06 23:27:02,604 INFO L226 Difference]: Without dead ends: 70325 [2021-12-06 23:27:02,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:27:02,705 INFO L933 BasicCegarLoop]: 3145 mSDtfsCounter, 606 mSDsluCounter, 11813 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 14958 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:02,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 14958 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:27:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70325 states. [2021-12-06 23:27:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70325 to 51503. [2021-12-06 23:27:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51503 states, 36245 states have (on average 1.323548075596634) internal successors, (47972), 36839 states have internal predecessors, (47972), 12389 states have call successors, (12389), 2821 states have call predecessors, (12389), 2868 states have return successors, (12650), 12258 states have call predecessors, (12650), 12388 states have call successors, (12650) [2021-12-06 23:27:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51503 states to 51503 states and 73011 transitions. [2021-12-06 23:27:05,597 INFO L78 Accepts]: Start accepts. Automaton has 51503 states and 73011 transitions. Word has length 761 [2021-12-06 23:27:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:05,598 INFO L470 AbstractCegarLoop]: Abstraction has 51503 states and 73011 transitions. [2021-12-06 23:27:05,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 5 states have internal predecessors, (334), 2 states have call successors, (103), 2 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) [2021-12-06 23:27:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 51503 states and 73011 transitions. [2021-12-06 23:27:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2021-12-06 23:27:05,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:05,670 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:05,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 23:27:05,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:27:05,872 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 862593027, now seen corresponding path program 1 times [2021-12-06 23:27:05,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:27:05,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727482572] [2021-12-06 23:27:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:05,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:27:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:27:05,884 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:27:05,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 23:27:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:08,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:27:08,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:27:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2021-12-06 23:27:09,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:27:09,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:27:09,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727482572] [2021-12-06 23:27:09,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727482572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:09,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:09,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:27:09,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922813643] [2021-12-06 23:27:09,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:09,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:27:09,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:27:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:27:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:27:09,182 INFO L87 Difference]: Start difference. First operand 51503 states and 73011 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 2 states have call successors, (101), 2 states have call predecessors, (101), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2021-12-06 23:27:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:11,033 INFO L93 Difference]: Finished difference Result 103115 states and 146307 transitions. [2021-12-06 23:27:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:27:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 2 states have call successors, (101), 2 states have call predecessors, (101), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 762 [2021-12-06 23:27:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:11,186 INFO L225 Difference]: With dead ends: 103115 [2021-12-06 23:27:11,186 INFO L226 Difference]: Without dead ends: 51663 [2021-12-06 23:27:11,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:27:11,287 INFO L933 BasicCegarLoop]: 2244 mSDtfsCounter, 3 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4482 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:11,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4482 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:27:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51663 states. [2021-12-06 23:27:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51663 to 51543. [2021-12-06 23:27:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51543 states, 36285 states have (on average 1.3231914014055395) internal successors, (48012), 36879 states have internal predecessors, (48012), 12389 states have call successors, (12389), 2821 states have call predecessors, (12389), 2868 states have return successors, (12650), 12258 states have call predecessors, (12650), 12388 states have call successors, (12650) [2021-12-06 23:27:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51543 states to 51543 states and 73051 transitions. [2021-12-06 23:27:13,884 INFO L78 Accepts]: Start accepts. Automaton has 51543 states and 73051 transitions. Word has length 762 [2021-12-06 23:27:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:13,885 INFO L470 AbstractCegarLoop]: Abstraction has 51543 states and 73051 transitions. [2021-12-06 23:27:13,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 2 states have call successors, (101), 2 states have call predecessors, (101), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2021-12-06 23:27:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 51543 states and 73051 transitions. [2021-12-06 23:27:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2021-12-06 23:27:13,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:13,954 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:14,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-06 23:27:14,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:27:14,156 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:14,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:14,158 INFO L85 PathProgramCache]: Analyzing trace with hash 165337793, now seen corresponding path program 1 times [2021-12-06 23:27:14,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:27:14,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556549003] [2021-12-06 23:27:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:14,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:27:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:27:14,168 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:27:14,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 23:27:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:16,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:27:16,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:27:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2021-12-06 23:27:17,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:27:17,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:27:17,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556549003] [2021-12-06 23:27:17,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556549003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:17,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:17,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:27:17,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320311832] [2021-12-06 23:27:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:17,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:27:17,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:27:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:27:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:27:17,795 INFO L87 Difference]: Start difference. First operand 51543 states and 73051 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2021-12-06 23:27:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:20,412 INFO L93 Difference]: Finished difference Result 122179 states and 173176 transitions. [2021-12-06 23:27:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:27:20,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 762 [2021-12-06 23:27:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:20,608 INFO L225 Difference]: With dead ends: 122179 [2021-12-06 23:27:20,608 INFO L226 Difference]: Without dead ends: 70687 [2021-12-06 23:27:20,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:27:20,707 INFO L933 BasicCegarLoop]: 3909 mSDtfsCounter, 1887 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 6035 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:20,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1887 Valid, 6035 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:27:20,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70687 states. [2021-12-06 23:27:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70687 to 70359. [2021-12-06 23:27:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70359 states, 49869 states have (on average 1.3219033868736088) internal successors, (65922), 50659 states have internal predecessors, (65922), 16489 states have call successors, (16489), 3933 states have call predecessors, (16489), 4000 states have return successors, (16826), 16310 states have call predecessors, (16826), 16488 states have call successors, (16826) [2021-12-06 23:27:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70359 states to 70359 states and 99237 transitions. [2021-12-06 23:27:23,917 INFO L78 Accepts]: Start accepts. Automaton has 70359 states and 99237 transitions. Word has length 762 [2021-12-06 23:27:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:23,918 INFO L470 AbstractCegarLoop]: Abstraction has 70359 states and 99237 transitions. [2021-12-06 23:27:23,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2021-12-06 23:27:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 70359 states and 99237 transitions. [2021-12-06 23:27:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2021-12-06 23:27:24,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:24,012 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:24,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-06 23:27:24,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:27:24,215 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1648514778, now seen corresponding path program 1 times [2021-12-06 23:27:24,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:27:24,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604682316] [2021-12-06 23:27:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:24,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:27:24,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:27:24,227 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:27:24,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 23:27:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:26,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 3520 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:27:26,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:27:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1839 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-12-06 23:27:27,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:27:27,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:27:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604682316] [2021-12-06 23:27:27,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604682316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:27,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:27,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:27:27,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761646773] [2021-12-06 23:27:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:27,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:27:27,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:27:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:27:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:27:27,789 INFO L87 Difference]: Start difference. First operand 70359 states and 99237 transitions. Second operand has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 5 states have internal predecessors, (340), 2 states have call successors, (104), 2 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) [2021-12-06 23:27:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:30,514 INFO L93 Difference]: Finished difference Result 149843 states and 212847 transitions. [2021-12-06 23:27:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:27:30,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 5 states have internal predecessors, (340), 2 states have call successors, (104), 2 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) Word has length 781 [2021-12-06 23:27:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:30,792 INFO L225 Difference]: With dead ends: 149843 [2021-12-06 23:27:30,792 INFO L226 Difference]: Without dead ends: 79535 [2021-12-06 23:27:30,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:27:30,921 INFO L933 BasicCegarLoop]: 2446 mSDtfsCounter, 190 mSDsluCounter, 9609 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 12055 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:30,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 12055 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:27:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79535 states. [2021-12-06 23:27:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79535 to 70535. [2021-12-06 23:27:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70535 states, 50013 states have (on average 1.3209765460980145) internal successors, (66066), 50795 states have internal predecessors, (66066), 16489 states have call successors, (16489), 3933 states have call predecessors, (16489), 4032 states have return successors, (16858), 16350 states have call predecessors, (16858), 16488 states have call successors, (16858) [2021-12-06 23:27:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70535 states to 70535 states and 99413 transitions. [2021-12-06 23:27:34,356 INFO L78 Accepts]: Start accepts. Automaton has 70535 states and 99413 transitions. Word has length 781 [2021-12-06 23:27:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:34,356 INFO L470 AbstractCegarLoop]: Abstraction has 70535 states and 99413 transitions. [2021-12-06 23:27:34,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 5 states have internal predecessors, (340), 2 states have call successors, (104), 2 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) [2021-12-06 23:27:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 70535 states and 99413 transitions. [2021-12-06 23:27:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2021-12-06 23:27:34,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:34,450 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:34,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 23:27:34,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:27:34,652 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:34,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1772830184, now seen corresponding path program 1 times [2021-12-06 23:27:34,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:27:34,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895441053] [2021-12-06 23:27:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:34,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:27:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:27:34,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:27:34,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 23:27:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:37,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 3520 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:27:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:27:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1839 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-12-06 23:27:38,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:27:38,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:27:38,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895441053] [2021-12-06 23:27:38,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895441053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:38,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:38,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:27:38,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492562840] [2021-12-06 23:27:38,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:38,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:27:38,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:27:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:27:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:27:38,225 INFO L87 Difference]: Start difference. First operand 70535 states and 99413 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-12-06 23:27:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:40,896 INFO L93 Difference]: Finished difference Result 141259 states and 199163 transitions. [2021-12-06 23:27:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:27:40,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 781 [2021-12-06 23:27:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:41,088 INFO L225 Difference]: With dead ends: 141259 [2021-12-06 23:27:41,088 INFO L226 Difference]: Without dead ends: 70775 [2021-12-06 23:27:41,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:27:41,209 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 6 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:41,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4474 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:27:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70775 states. [2021-12-06 23:27:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70775 to 70675. [2021-12-06 23:27:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70675 states, 50133 states have (on average 1.3206071848881975) internal successors, (66206), 50935 states have internal predecessors, (66206), 16489 states have call successors, (16489), 3933 states have call predecessors, (16489), 4052 states have return successors, (16882), 16350 states have call predecessors, (16882), 16488 states have call successors, (16882) [2021-12-06 23:27:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70675 states to 70675 states and 99577 transitions. [2021-12-06 23:27:44,442 INFO L78 Accepts]: Start accepts. Automaton has 70675 states and 99577 transitions. Word has length 781 [2021-12-06 23:27:44,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:44,443 INFO L470 AbstractCegarLoop]: Abstraction has 70675 states and 99577 transitions. [2021-12-06 23:27:44,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-12-06 23:27:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand 70675 states and 99577 transitions. [2021-12-06 23:27:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2021-12-06 23:27:44,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:44,538 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:44,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 23:27:44,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:27:44,740 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 583209468, now seen corresponding path program 1 times [2021-12-06 23:27:44,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:27:44,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55843656] [2021-12-06 23:27:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:44,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:27:44,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:27:44,752 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:27:44,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 23:27:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:47,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 3529 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:27:47,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:27:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-12-06 23:27:48,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:27:48,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:27:48,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55843656] [2021-12-06 23:27:48,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55843656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:48,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:48,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:27:48,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105829585] [2021-12-06 23:27:48,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:48,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:27:48,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:27:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:27:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:27:48,418 INFO L87 Difference]: Start difference. First operand 70675 states and 99577 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-12-06 23:27:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:51,428 INFO L93 Difference]: Finished difference Result 141419 states and 199291 transitions. [2021-12-06 23:27:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:27:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 784 [2021-12-06 23:27:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:51,629 INFO L225 Difference]: With dead ends: 141419 [2021-12-06 23:27:51,630 INFO L226 Difference]: Without dead ends: 70795 [2021-12-06 23:27:51,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:27:51,759 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 349 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 6229 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:51,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 6229 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:27:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70795 states. [2021-12-06 23:27:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70795 to 70635. [2021-12-06 23:27:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70635 states, 50093 states have (on average 1.319665422314495) internal successors, (66106), 50895 states have internal predecessors, (66106), 16489 states have call successors, (16489), 3933 states have call predecessors, (16489), 4052 states have return successors, (16882), 16350 states have call predecessors, (16882), 16488 states have call successors, (16882) [2021-12-06 23:27:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70635 states to 70635 states and 99477 transitions. [2021-12-06 23:27:55,102 INFO L78 Accepts]: Start accepts. Automaton has 70635 states and 99477 transitions. Word has length 784 [2021-12-06 23:27:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:55,103 INFO L470 AbstractCegarLoop]: Abstraction has 70635 states and 99477 transitions. [2021-12-06 23:27:55,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-12-06 23:27:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 70635 states and 99477 transitions. [2021-12-06 23:27:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2021-12-06 23:27:55,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:55,197 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:55,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-06 23:27:55,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:27:55,399 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:55,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash 699526906, now seen corresponding path program 1 times [2021-12-06 23:27:55,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:27:55,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757568603] [2021-12-06 23:27:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:55,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:27:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:27:55,411 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:27:55,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 23:27:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 3529 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:27:58,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:27:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-12-06 23:27:59,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:27:59,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:27:59,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757568603] [2021-12-06 23:27:59,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757568603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:59,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:59,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:27:59,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096358176] [2021-12-06 23:27:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:59,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:27:59,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:27:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:27:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:27:59,154 INFO L87 Difference]: Start difference. First operand 70635 states and 99477 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-12-06 23:28:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:02,301 INFO L93 Difference]: Finished difference Result 141679 states and 199547 transitions. [2021-12-06 23:28:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:28:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 784 [2021-12-06 23:28:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:02,502 INFO L225 Difference]: With dead ends: 141679 [2021-12-06 23:28:02,502 INFO L226 Difference]: Without dead ends: 71095 [2021-12-06 23:28:02,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:28:02,647 INFO L933 BasicCegarLoop]: 2235 mSDtfsCounter, 393 mSDsluCounter, 10661 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 12896 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:02,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 12896 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:28:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71095 states. [2021-12-06 23:28:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71095 to 70795. [2021-12-06 23:28:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70795 states, 50253 states have (on average 1.3190456291166697) internal successors, (66286), 51055 states have internal predecessors, (66286), 16489 states have call successors, (16489), 3933 states have call predecessors, (16489), 4052 states have return successors, (16882), 16350 states have call predecessors, (16882), 16488 states have call successors, (16882) [2021-12-06 23:28:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70795 states to 70795 states and 99657 transitions. [2021-12-06 23:28:06,167 INFO L78 Accepts]: Start accepts. Automaton has 70795 states and 99657 transitions. Word has length 784 [2021-12-06 23:28:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:06,169 INFO L470 AbstractCegarLoop]: Abstraction has 70795 states and 99657 transitions. [2021-12-06 23:28:06,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-12-06 23:28:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 70795 states and 99657 transitions. [2021-12-06 23:28:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2021-12-06 23:28:06,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:06,286 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:06,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 23:28:06,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:28:06,488 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:06,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1766389525, now seen corresponding path program 1 times [2021-12-06 23:28:06,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:28:06,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242336125] [2021-12-06 23:28:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:06,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:28:06,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:28:06,502 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:28:06,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 23:28:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:10,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 3542 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:28:10,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:28:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2021-12-06 23:28:10,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:28:10,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:28:10,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242336125] [2021-12-06 23:28:10,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242336125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:28:10,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:28:10,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:28:10,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362856788] [2021-12-06 23:28:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:28:10,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:28:10,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:28:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:28:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:28:10,809 INFO L87 Difference]: Start difference. First operand 70795 states and 99657 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-12-06 23:28:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:13,820 INFO L93 Difference]: Finished difference Result 148139 states and 209511 transitions. [2021-12-06 23:28:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:28:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 786 [2021-12-06 23:28:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:14,043 INFO L225 Difference]: With dead ends: 148139 [2021-12-06 23:28:14,043 INFO L226 Difference]: Without dead ends: 77395 [2021-12-06 23:28:14,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:28:14,172 INFO L933 BasicCegarLoop]: 2297 mSDtfsCounter, 139 mSDsluCounter, 4531 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 6828 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:14,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 6828 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:28:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77395 states. [2021-12-06 23:28:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77395 to 70875. [2021-12-06 23:28:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70875 states, 50333 states have (on average 1.3185385333677706) internal successors, (66366), 51095 states have internal predecessors, (66366), 16489 states have call successors, (16489), 3933 states have call predecessors, (16489), 4052 states have return successors, (16882), 16350 states have call predecessors, (16882), 16488 states have call successors, (16882) [2021-12-06 23:28:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70875 states to 70875 states and 99737 transitions. [2021-12-06 23:28:17,763 INFO L78 Accepts]: Start accepts. Automaton has 70875 states and 99737 transitions. Word has length 786 [2021-12-06 23:28:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:17,764 INFO L470 AbstractCegarLoop]: Abstraction has 70875 states and 99737 transitions. [2021-12-06 23:28:17,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-12-06 23:28:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 70875 states and 99737 transitions. [2021-12-06 23:28:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2021-12-06 23:28:17,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:17,850 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:17,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 23:28:18,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:28:18,053 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash -354926892, now seen corresponding path program 1 times [2021-12-06 23:28:18,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:28:18,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298442145] [2021-12-06 23:28:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:18,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:28:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:28:18,066 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:28:18,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 23:28:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:21,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 3544 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:28:21,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:28:22,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:28:22,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:28:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2021-12-06 23:28:23,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:28:23,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:28:23,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298442145] [2021-12-06 23:28:23,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298442145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:28:23,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:28:23,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:28:23,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246248548] [2021-12-06 23:28:23,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:28:23,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:28:23,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:28:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:28:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:28:23,248 INFO L87 Difference]: Start difference. First operand 70875 states and 99737 transitions. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 4 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) [2021-12-06 23:28:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:26,271 INFO L93 Difference]: Finished difference Result 142699 states and 200323 transitions. [2021-12-06 23:28:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:28:26,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 4 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) Word has length 788 [2021-12-06 23:28:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:26,470 INFO L225 Difference]: With dead ends: 142699 [2021-12-06 23:28:26,470 INFO L226 Difference]: Without dead ends: 71875 [2021-12-06 23:28:26,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 769 SyntacticMatches, 15 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:28:26,596 INFO L933 BasicCegarLoop]: 2247 mSDtfsCounter, 9 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:26,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6563 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 174 Unchecked, 0.1s Time] [2021-12-06 23:28:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71875 states. [2021-12-06 23:28:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71875 to 71875. [2021-12-06 23:28:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71875 states, 51053 states have (on average 1.3140461872955556) internal successors, (67086), 51815 states have internal predecessors, (67086), 16529 states have call successors, (16529), 4173 states have call predecessors, (16529), 4292 states have return successors, (16922), 16390 states have call predecessors, (16922), 16528 states have call successors, (16922) [2021-12-06 23:28:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71875 states to 71875 states and 100537 transitions. [2021-12-06 23:28:30,067 INFO L78 Accepts]: Start accepts. Automaton has 71875 states and 100537 transitions. Word has length 788 [2021-12-06 23:28:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:30,068 INFO L470 AbstractCegarLoop]: Abstraction has 71875 states and 100537 transitions. [2021-12-06 23:28:30,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 4 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) [2021-12-06 23:28:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 71875 states and 100537 transitions. [2021-12-06 23:28:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2021-12-06 23:28:30,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:30,162 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:30,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-06 23:28:30,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:28:30,364 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:30,366 INFO L85 PathProgramCache]: Analyzing trace with hash -800233587, now seen corresponding path program 1 times [2021-12-06 23:28:30,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:28:30,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382492477] [2021-12-06 23:28:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:30,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:28:30,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:28:30,377 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:28:30,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 23:28:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:34,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 3553 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:28:34,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:28:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1844 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2021-12-06 23:28:34,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:28:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1844 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 1824 trivial. 0 not checked. [2021-12-06 23:28:35,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:28:35,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382492477] [2021-12-06 23:28:35,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382492477] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:28:35,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:28:35,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 23:28:35,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129498680] [2021-12-06 23:28:35,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:28:35,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:28:35,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:28:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:28:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:28:35,507 INFO L87 Difference]: Start difference. First operand 71875 states and 100537 transitions. Second operand has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 4 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (119), 4 states have call predecessors, (119), 4 states have call successors, (119) [2021-12-06 23:28:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:40,560 INFO L93 Difference]: Finished difference Result 163299 states and 231407 transitions. [2021-12-06 23:28:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:28:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 4 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (119), 4 states have call predecessors, (119), 4 states have call successors, (119) Word has length 794 [2021-12-06 23:28:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:40,862 INFO L225 Difference]: With dead ends: 163299 [2021-12-06 23:28:40,862 INFO L226 Difference]: Without dead ends: 91475 [2021-12-06 23:28:40,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1580 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:28:40,998 INFO L933 BasicCegarLoop]: 2409 mSDtfsCounter, 834 mSDsluCounter, 9339 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 11748 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:40,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 11748 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:28:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91475 states. [2021-12-06 23:28:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91475 to 72395. [2021-12-06 23:28:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72395 states, 51453 states have (on average 1.313159582531631) internal successors, (67566), 52215 states have internal predecessors, (67566), 16649 states have call successors, (16649), 4173 states have call predecessors, (16649), 4292 states have return successors, (17042), 16510 states have call predecessors, (17042), 16648 states have call successors, (17042) [2021-12-06 23:28:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72395 states to 72395 states and 101257 transitions. [2021-12-06 23:28:44,974 INFO L78 Accepts]: Start accepts. Automaton has 72395 states and 101257 transitions. Word has length 794 [2021-12-06 23:28:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:44,975 INFO L470 AbstractCegarLoop]: Abstraction has 72395 states and 101257 transitions. [2021-12-06 23:28:44,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 4 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (119), 4 states have call predecessors, (119), 4 states have call successors, (119) [2021-12-06 23:28:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 72395 states and 101257 transitions. [2021-12-06 23:28:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2021-12-06 23:28:45,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:45,142 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:45,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 23:28:45,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:28:45,344 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1568509620, now seen corresponding path program 1 times [2021-12-06 23:28:45,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:28:45,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620817731] [2021-12-06 23:28:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:45,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:28:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:28:45,356 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:28:45,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 23:28:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:48,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 3555 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:28:48,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:28:49,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:28:50,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:28:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 558 proven. 1 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2021-12-06 23:28:50,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:28:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2021-12-06 23:28:51,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:28:51,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620817731] [2021-12-06 23:28:51,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620817731] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:28:51,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:28:51,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-12-06 23:28:51,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024728547] [2021-12-06 23:28:51,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:28:51,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:28:51,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:28:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:28:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:28:51,374 INFO L87 Difference]: Start difference. First operand 72395 states and 101257 transitions. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 4 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (128), 4 states have call predecessors, (128), 4 states have call successors, (128) [2021-12-06 23:28:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:54,369 INFO L93 Difference]: Finished difference Result 144859 states and 202603 transitions. [2021-12-06 23:28:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:28:54,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 4 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (128), 4 states have call predecessors, (128), 4 states have call successors, (128) Word has length 796 [2021-12-06 23:28:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:54,580 INFO L225 Difference]: With dead ends: 144859 [2021-12-06 23:28:54,581 INFO L226 Difference]: Without dead ends: 72515 [2021-12-06 23:28:54,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1591 GetRequests, 1569 SyntacticMatches, 18 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:28:54,708 INFO L933 BasicCegarLoop]: 2247 mSDtfsCounter, 10 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:54,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 6558 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 176 Unchecked, 0.1s Time] [2021-12-06 23:28:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72515 states. [2021-12-06 23:28:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72515 to 72515. [2021-12-06 23:28:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72515 states, 51533 states have (on average 1.3103448275862069) internal successors, (67526), 52295 states have internal predecessors, (67526), 16649 states have call successors, (16649), 4213 states have call predecessors, (16649), 4332 states have return successors, (17042), 16510 states have call predecessors, (17042), 16648 states have call successors, (17042) [2021-12-06 23:28:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72515 states to 72515 states and 101217 transitions. [2021-12-06 23:28:58,360 INFO L78 Accepts]: Start accepts. Automaton has 72515 states and 101217 transitions. Word has length 796 [2021-12-06 23:28:58,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:58,361 INFO L470 AbstractCegarLoop]: Abstraction has 72515 states and 101217 transitions. [2021-12-06 23:28:58,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 4 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (128), 4 states have call predecessors, (128), 4 states have call successors, (128) [2021-12-06 23:28:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 72515 states and 101217 transitions. [2021-12-06 23:28:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2021-12-06 23:28:58,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:58,523 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:58,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-12-06 23:28:58,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:28:58,725 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 387115253, now seen corresponding path program 2 times [2021-12-06 23:28:58,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:28:58,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246939463] [2021-12-06 23:28:58,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:28:58,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:28:58,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:28:58,737 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:28:58,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 23:28:59,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 23:28:59,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:28:59,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:28:59,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:29:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 1775 trivial. 0 not checked. [2021-12-06 23:29:00,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:29:00,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:29:00,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246939463] [2021-12-06 23:29:00,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246939463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:29:00,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:29:00,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:29:00,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093061973] [2021-12-06 23:29:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:29:00,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:29:00,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:29:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:29:00,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:29:00,034 INFO L87 Difference]: Start difference. First operand 72515 states and 101217 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 4 states have internal predecessors, (322), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (97), 3 states have call predecessors, (97), 2 states have call successors, (97) [2021-12-06 23:29:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:29:03,276 INFO L93 Difference]: Finished difference Result 145221 states and 202854 transitions. [2021-12-06 23:29:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:29:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 4 states have internal predecessors, (322), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (97), 3 states have call predecessors, (97), 2 states have call successors, (97) Word has length 818 [2021-12-06 23:29:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:29:03,588 INFO L225 Difference]: With dead ends: 145221 [2021-12-06 23:29:03,588 INFO L226 Difference]: Without dead ends: 72757 [2021-12-06 23:29:03,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:29:03,712 INFO L933 BasicCegarLoop]: 2236 mSDtfsCounter, 2 mSDsluCounter, 6703 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8939 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:29:03,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 8939 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:29:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72757 states. [2021-12-06 23:29:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72757 to 72707. [2021-12-06 23:29:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72707 states, 51669 states have (on average 1.3095279568019509) internal successors, (67662), 52447 states have internal predecessors, (67662), 16649 states have call successors, (16649), 4213 states have call predecessors, (16649), 4388 states have return successors, (17098), 16550 states have call predecessors, (17098), 16648 states have call successors, (17098) [2021-12-06 23:29:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72707 states to 72707 states and 101409 transitions. [2021-12-06 23:29:07,601 INFO L78 Accepts]: Start accepts. Automaton has 72707 states and 101409 transitions. Word has length 818 [2021-12-06 23:29:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:29:07,602 INFO L470 AbstractCegarLoop]: Abstraction has 72707 states and 101409 transitions. [2021-12-06 23:29:07,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 4 states have internal predecessors, (322), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (97), 3 states have call predecessors, (97), 2 states have call successors, (97) [2021-12-06 23:29:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 72707 states and 101409 transitions. [2021-12-06 23:29:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2021-12-06 23:29:07,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:29:07,698 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 14, 14, 14, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:29:07,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 23:29:07,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:29:07,900 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:29:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:29:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1136885295, now seen corresponding path program 1 times [2021-12-06 23:29:07,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:29:07,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520531536] [2021-12-06 23:29:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:29:07,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:29:07,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:29:07,913 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:29:07,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 23:29:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:10,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3636 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:29:10,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:29:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1950 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2021-12-06 23:29:11,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:29:11,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:29:11,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520531536] [2021-12-06 23:29:11,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520531536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:29:11,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:29:11,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:29:11,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567143393] [2021-12-06 23:29:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:29:11,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:29:11,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:29:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:29:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:29:11,556 INFO L87 Difference]: Start difference. First operand 72707 states and 101409 transitions. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-12-06 23:29:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:29:16,935 INFO L93 Difference]: Finished difference Result 169108 states and 236066 transitions. [2021-12-06 23:29:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:29:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 839 [2021-12-06 23:29:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:29:17,250 INFO L225 Difference]: With dead ends: 169108 [2021-12-06 23:29:17,250 INFO L226 Difference]: Without dead ends: 96452 [2021-12-06 23:29:17,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:29:17,427 INFO L933 BasicCegarLoop]: 2872 mSDtfsCounter, 2653 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 7470 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:29:17,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2653 Valid, 7470 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:29:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96452 states. [2021-12-06 23:29:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96452 to 94971. [2021-12-06 23:29:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94971 states, 67737 states have (on average 1.311602226257437) internal successors, (88844), 68795 states have internal predecessors, (88844), 21577 states have call successors, (21577), 5409 states have call predecessors, (21577), 5656 states have return successors, (22234), 21414 states have call predecessors, (22234), 21576 states have call successors, (22234) [2021-12-06 23:29:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94971 states to 94971 states and 132655 transitions. [2021-12-06 23:29:22,922 INFO L78 Accepts]: Start accepts. Automaton has 94971 states and 132655 transitions. Word has length 839 [2021-12-06 23:29:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:29:22,923 INFO L470 AbstractCegarLoop]: Abstraction has 94971 states and 132655 transitions. [2021-12-06 23:29:22,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-12-06 23:29:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 94971 states and 132655 transitions. [2021-12-06 23:29:23,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2021-12-06 23:29:23,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:29:23,052 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 14, 14, 14, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:29:23,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-06 23:29:23,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:29:23,254 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:29:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:29:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1430743025, now seen corresponding path program 1 times [2021-12-06 23:29:23,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:29:23,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670012792] [2021-12-06 23:29:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:29:23,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:29:23,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:29:23,266 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:29:23,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 23:29:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:26,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 3638 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:29:26,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:29:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1950 backedges. 335 proven. 38 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2021-12-06 23:29:27,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:29:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1950 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2021-12-06 23:29:28,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:29:28,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670012792] [2021-12-06 23:29:28,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670012792] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:29:28,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:29:28,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-06 23:29:28,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034985835] [2021-12-06 23:29:28,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:29:28,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:29:28,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:29:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:29:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:29:28,717 INFO L87 Difference]: Start difference. First operand 94971 states and 132655 transitions. Second operand has 14 states, 14 states have (on average 29.785714285714285) internal successors, (417), 14 states have internal predecessors, (417), 10 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (132), 10 states have call predecessors, (132), 10 states have call successors, (132) [2021-12-06 23:29:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:29:33,705 INFO L93 Difference]: Finished difference Result 191331 states and 267347 transitions. [2021-12-06 23:29:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:29:33,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 29.785714285714285) internal successors, (417), 14 states have internal predecessors, (417), 10 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (132), 10 states have call predecessors, (132), 10 states have call successors, (132) Word has length 839 [2021-12-06 23:29:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:29:34,139 INFO L225 Difference]: With dead ends: 191331 [2021-12-06 23:29:34,139 INFO L226 Difference]: Without dead ends: 96411 [2021-12-06 23:29:34,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1685 GetRequests, 1664 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:29:34,308 INFO L933 BasicCegarLoop]: 2257 mSDtfsCounter, 45 mSDsluCounter, 20182 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 22439 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:29:34,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 22439 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:29:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96411 states. [2021-12-06 23:29:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96411 to 96411. [2021-12-06 23:29:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96411 states, 68889 states have (on average 1.3063914413041269) internal successors, (89996), 69947 states have internal predecessors, (89996), 21865 states have call successors, (21865), 5409 states have call predecessors, (21865), 5656 states have return successors, (22522), 21702 states have call predecessors, (22522), 21864 states have call successors, (22522) [2021-12-06 23:29:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96411 states to 96411 states and 134383 transitions. [2021-12-06 23:29:39,644 INFO L78 Accepts]: Start accepts. Automaton has 96411 states and 134383 transitions. Word has length 839 [2021-12-06 23:29:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:29:39,645 INFO L470 AbstractCegarLoop]: Abstraction has 96411 states and 134383 transitions. [2021-12-06 23:29:39,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 29.785714285714285) internal successors, (417), 14 states have internal predecessors, (417), 10 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (132), 10 states have call predecessors, (132), 10 states have call successors, (132) [2021-12-06 23:29:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 96411 states and 134383 transitions. [2021-12-06 23:29:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2021-12-06 23:29:39,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:29:39,775 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 14, 14, 14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:29:39,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 23:29:39,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:29:39,977 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:29:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:29:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1640197921, now seen corresponding path program 2 times [2021-12-06 23:29:39,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:29:39,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979817481] [2021-12-06 23:29:39,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:29:39,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:29:39,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:29:39,990 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:29:39,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-06 23:29:47,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:29:47,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:29:47,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 3704 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:29:47,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:29:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 240 proven. 582 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2021-12-06 23:29:50,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:29:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 2229 trivial. 0 not checked. [2021-12-06 23:29:52,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:29:52,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979817481] [2021-12-06 23:29:52,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979817481] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:29:52,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:29:52,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 23:29:52,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203951083] [2021-12-06 23:29:52,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:29:52,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:29:52,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:29:52,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:29:52,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:29:52,124 INFO L87 Difference]: Start difference. First operand 96411 states and 134383 transitions. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 6 states have call successors, (199), 4 states have call predecessors, (199), 3 states have return successors, (198), 5 states have call predecessors, (198), 5 states have call successors, (198) [2021-12-06 23:31:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:07,684 INFO L93 Difference]: Finished difference Result 722632 states and 1006659 transitions. [2021-12-06 23:31:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:31:07,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 6 states have call successors, (199), 4 states have call predecessors, (199), 3 states have return successors, (198), 5 states have call predecessors, (198), 5 states have call successors, (198) Word has length 887 [2021-12-06 23:31:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:10,379 INFO L225 Difference]: With dead ends: 722632 [2021-12-06 23:31:10,379 INFO L226 Difference]: Without dead ends: 722624 [2021-12-06 23:31:10,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1778 GetRequests, 1769 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:31:10,601 INFO L933 BasicCegarLoop]: 8338 mSDtfsCounter, 20994 mSDsluCounter, 15934 mSDsCounter, 0 mSdLazyCounter, 13851 mSolverCounterSat, 6443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20994 SdHoareTripleChecker+Valid, 24272 SdHoareTripleChecker+Invalid, 20294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6443 IncrementalHoareTripleChecker+Valid, 13851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:10,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20994 Valid, 24272 Invalid, 20294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6443 Valid, 13851 Invalid, 0 Unknown, 0 Unchecked, 40.6s Time] [2021-12-06 23:31:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722624 states. [2021-12-06 23:31:51,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722624 to 677406. [2021-12-06 23:31:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677406 states, 485801 states have (on average 1.307475694780373) internal successors, (635173), 493480 states have internal predecessors, (635173), 151838 states have call successors, (151838), 37931 states have call predecessors, (151838), 39766 states have return successors, (156834), 150588 states have call predecessors, (156834), 151837 states have call successors, (156834) [2021-12-06 23:31:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677406 states to 677406 states and 943845 transitions. [2021-12-06 23:31:55,112 INFO L78 Accepts]: Start accepts. Automaton has 677406 states and 943845 transitions. Word has length 887 [2021-12-06 23:31:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:55,113 INFO L470 AbstractCegarLoop]: Abstraction has 677406 states and 943845 transitions. [2021-12-06 23:31:55,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 6 states have call successors, (199), 4 states have call predecessors, (199), 3 states have return successors, (198), 5 states have call predecessors, (198), 5 states have call successors, (198) [2021-12-06 23:31:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 677406 states and 943845 transitions. [2021-12-06 23:31:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2021-12-06 23:31:56,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:56,692 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 15, 14, 14, 14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:31:56,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-12-06 23:31:56,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:31:56,894 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash 566683861, now seen corresponding path program 1 times [2021-12-06 23:31:56,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:31:56,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65988649] [2021-12-06 23:31:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:56,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:31:56,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:31:56,907 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:31:56,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ec389e-892d-4b52-8ad5-6c70f1df1571/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 23:32:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:00,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 3724 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:32:00,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:32:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 343 proven. 245 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2021-12-06 23:32:02,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:32:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 26 proven. 245 refuted. 0 times theorem prover too weak. 2011 trivial. 0 not checked. [2021-12-06 23:32:03,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:32:03,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65988649] [2021-12-06 23:32:03,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65988649] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:32:03,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:32:03,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-06 23:32:03,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382243837] [2021-12-06 23:32:03,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:32:03,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:32:03,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:32:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:32:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:32:03,504 INFO L87 Difference]: Start difference. First operand 677406 states and 943845 transitions. Second operand has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 22 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (144), 22 states have call predecessors, (144), 22 states have call successors, (144) [2021-12-06 23:32:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:32:44,386 INFO L93 Difference]: Finished difference Result 1373134 states and 1913876 transitions. [2021-12-06 23:32:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:32:44,387 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 22 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (144), 22 states have call predecessors, (144), 22 states have call successors, (144) Word has length 892 [2021-12-06 23:32:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:32:47,275 INFO L225 Difference]: With dead ends: 1373134 [2021-12-06 23:32:47,275 INFO L226 Difference]: Without dead ends: 696126 [2021-12-06 23:32:48,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1803 GetRequests, 1758 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=576, Invalid=1586, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 23:32:48,726 INFO L933 BasicCegarLoop]: 2287 mSDtfsCounter, 102 mSDsluCounter, 27167 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 29454 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:32:48,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 29454 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 23:32:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696126 states. [2021-12-06 23:33:31,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696126 to 696126. [2021-12-06 23:33:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696126 states, 500777 states have (on average 1.2982804721462846) internal successors, (650149), 508456 states have internal predecessors, (650149), 155582 states have call successors, (155582), 37931 states have call predecessors, (155582), 39766 states have return successors, (160578), 154332 states have call predecessors, (160578), 155581 states have call successors, (160578)