./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:14:06,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:14:06,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:14:06,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:14:06,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:14:06,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:14:06,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:14:06,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:14:06,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:14:06,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:14:06,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:14:06,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:14:06,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:14:06,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:14:06,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:14:06,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:14:06,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:14:06,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:14:06,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:14:06,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:14:06,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:14:06,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:14:06,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:14:06,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:14:06,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:14:06,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:14:06,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:14:06,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:14:06,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:14:06,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:14:06,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:14:06,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:14:06,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:14:06,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:14:06,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:14:06,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:14:06,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:14:06,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:14:06,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:14:06,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:14:06,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:14:06,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:14:06,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:14:06,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:14:06,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:14:06,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:14:06,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:14:06,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:14:06,453 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:14:06,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:14:06,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:14:06,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:14:06,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:14:06,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:14:06,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:14:06,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:14:06,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:14:06,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:14:06,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:14:06,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:14:06,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:14:06,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:14:06,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:14:06,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:14:06,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:14:06,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:14:06,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:14:06,456 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:14:06,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:14:06,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:14:06,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:14:06,456 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf [2021-11-07 13:14:06,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:14:06,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:14:06,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:14:06,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:14:06,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:14:06,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 13:14:06,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25101d55/7eb4c70aa5bf4bbd9b2c2dcd58254250/FLAG148128d20 [2021-11-07 13:14:07,403 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:14:07,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 13:14:07,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25101d55/7eb4c70aa5bf4bbd9b2c2dcd58254250/FLAG148128d20 [2021-11-07 13:14:07,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25101d55/7eb4c70aa5bf4bbd9b2c2dcd58254250 [2021-11-07 13:14:07,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:14:07,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:14:07,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:14:07,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:14:07,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:14:07,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:07" (1/1) ... [2021-11-07 13:14:07,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3864f0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:07, skipping insertion in model container [2021-11-07 13:14:07,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:07" (1/1) ... [2021-11-07 13:14:07,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:14:07,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:14:08,702 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i[177976,177989] [2021-11-07 13:14:09,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:14:09,771 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:14:09,832 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i[177976,177989] [2021-11-07 13:14:10,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:14:10,304 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:14:10,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10 WrapperNode [2021-11-07 13:14:10,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:14:10,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:14:10,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:14:10,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:14:10,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:10,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:10,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:14:10,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:14:10,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:14:10,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:14:10,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:10,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:11,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:11,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:11,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:11,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:11,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:11,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:14:11,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:14:11,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:14:11,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:14:11,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (1/1) ... [2021-11-07 13:14:11,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:14:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:14:11,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 13:14:11,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 13:14:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure __team_change_mode [2021-11-07 13:14:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_change_mode [2021-11-07 13:14:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure team_init [2021-11-07 13:14:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure team_init [2021-11-07 13:14:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure team_del_slave [2021-11-07 13:14:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure team_del_slave [2021-11-07 13:14:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_set [2021-11-07 13:14:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_set [2021-11-07 13:14:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_add [2021-11-07 13:14:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_add [2021-11-07 13:14:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:14:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure team_add_slave [2021-11-07 13:14:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure team_add_slave [2021-11-07 13:14:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:14:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:14:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:14:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure team_mode_option_set [2021-11-07 13:14:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure team_mode_option_set [2021-11-07 13:14:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure team_change_mode [2021-11-07 13:14:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure team_change_mode [2021-11-07 13:14:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-07 13:14:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:14:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:14:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:14:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:14:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:14:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 13:14:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 13:14:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_set [2021-11-07 13:14:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_set [2021-11-07 13:14:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_del [2021-11-07 13:14:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_del [2021-11-07 13:14:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:14:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:14:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_register [2021-11-07 13:14:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_register [2021-11-07 13:14:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_change_check [2021-11-07 13:14:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_change_check [2021-11-07 13:14:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:14:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:14:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_register [2021-11-07 13:14:12,001 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_register [2021-11-07 13:14:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_option [2021-11-07 13:14:12,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_option [2021-11-07 13:14:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 13:14:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:14:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:14:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_get [2021-11-07 13:14:12,001 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_get [2021-11-07 13:14:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:14:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_fill_one_option_get [2021-11-07 13:14:12,002 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_fill_one_option_get [2021-11-07 13:14:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:14:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_get [2021-11-07 13:14:12,002 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_get [2021-11-07 13:14:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_options_get [2021-11-07 13:14:12,002 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_options_get [2021-11-07 13:14:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_port [2021-11-07 13:14:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_port [2021-11-07 13:14:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_change_check [2021-11-07 13:14:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_change_check [2021-11-07 13:14:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 13:14:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 13:14:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_enter [2021-11-07 13:14:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_enter [2021-11-07 13:14:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:14:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_event_options_get [2021-11-07 13:14:12,004 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_event_options_get [2021-11-07 13:14:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure team_uninit [2021-11-07 13:14:12,004 INFO L138 BoogieDeclarations]: Found implementation of procedure team_uninit [2021-11-07 13:14:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add [2021-11-07 13:14:12,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add [2021-11-07 13:14:25,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:14:25,874 INFO L299 CfgBuilder]: Removed 5565 assume(true) statements. [2021-11-07 13:14:25,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:25 BoogieIcfgContainer [2021-11-07 13:14:25,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:14:25,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:14:25,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:14:25,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:14:25,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:14:07" (1/3) ... [2021-11-07 13:14:25,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d87767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:25, skipping insertion in model container [2021-11-07 13:14:25,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:10" (2/3) ... [2021-11-07 13:14:25,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d87767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:25, skipping insertion in model container [2021-11-07 13:14:25,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:25" (3/3) ... [2021-11-07 13:14:25,889 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 13:14:25,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:14:25,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:14:25,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:14:25,950 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 [2021-11-07 13:14:25,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:14:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 6373 states, 6296 states have (on average 1.4866581956797966) internal successors, (9360), 6300 states have internal predecessors, (9360), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-07 13:14:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 13:14:26,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:14:26,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:14:26,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:14:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:14:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1443674913, now seen corresponding path program 1 times [2021-11-07 13:14:26,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:14:26,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302797774] [2021-11-07 13:14:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:14:26,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:14:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:14:26,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:14:26,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302797774] [2021-11-07 13:14:26,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302797774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:14:26,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:14:26,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:14:26,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726837840] [2021-11-07 13:14:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:14:26,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:14:26,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:14:26,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:14:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:14:26,700 INFO L87 Difference]: Start difference. First operand has 6373 states, 6296 states have (on average 1.4866581956797966) internal successors, (9360), 6300 states have internal predecessors, (9360), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:28,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:14:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:14:29,282 INFO L93 Difference]: Finished difference Result 18999 states and 28304 transitions. [2021-11-07 13:14:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:14:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 13:14:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:14:29,348 INFO L225 Difference]: With dead ends: 18999 [2021-11-07 13:14:29,348 INFO L226 Difference]: Without dead ends: 12601 [2021-11-07 13:14:29,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:14:29,382 INFO L933 BasicCegarLoop]: 9363 mSDtfsCounter, 9187 mSDsluCounter, 9292 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2067.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9187 SdHoareTripleChecker+Valid, 18655 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.81ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2211.77ms IncrementalHoareTripleChecker+Time [2021-11-07 13:14:29,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9187 Valid, 18655 Invalid, 15 Unknown, 0 Unchecked, 33.81ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2211.77ms Time] [2021-11-07 13:14:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-11-07 13:14:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 12601. [2021-11-07 13:14:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12601 states, 12450 states have (on average 1.46570281124498) internal successors, (18248), 12456 states have internal predecessors, (18248), 96 states have call successors, (96), 54 states have call predecessors, (96), 54 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-07 13:14:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12601 states to 12601 states and 18440 transitions. [2021-11-07 13:14:29,743 INFO L78 Accepts]: Start accepts. Automaton has 12601 states and 18440 transitions. Word has length 47 [2021-11-07 13:14:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:14:29,748 INFO L470 AbstractCegarLoop]: Abstraction has 12601 states and 18440 transitions. [2021-11-07 13:14:29,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12601 states and 18440 transitions. [2021-11-07 13:14:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 13:14:29,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:14:29,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:14:29,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:14:29,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:14:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:14:29,757 INFO L85 PathProgramCache]: Analyzing trace with hash 457393101, now seen corresponding path program 1 times [2021-11-07 13:14:29,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:14:29,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908581040] [2021-11-07 13:14:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:14:29,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:14:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:14:30,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:14:30,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908581040] [2021-11-07 13:14:30,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908581040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:14:30,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:14:30,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:14:30,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627650100] [2021-11-07 13:14:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:14:30,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:14:30,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:14:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:14:30,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:14:30,027 INFO L87 Difference]: Start difference. First operand 12601 states and 18440 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:14:30,869 INFO L93 Difference]: Finished difference Result 37679 states and 55361 transitions. [2021-11-07 13:14:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:14:30,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 13:14:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:14:31,014 INFO L225 Difference]: With dead ends: 37679 [2021-11-07 13:14:31,014 INFO L226 Difference]: Without dead ends: 25131 [2021-11-07 13:14:31,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.24ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:14:31,076 INFO L933 BasicCegarLoop]: 9300 mSDtfsCounter, 9223 mSDsluCounter, 27759 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9223 SdHoareTripleChecker+Valid, 37059 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.44ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 358.44ms IncrementalHoareTripleChecker+Time [2021-11-07 13:14:31,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9223 Valid, 37059 Invalid, 379 Unknown, 0 Unchecked, 48.44ms Time], IncrementalHoareTripleChecker [16 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 358.44ms Time] [2021-11-07 13:14:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25131 states. [2021-11-07 13:14:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25131 to 25067. [2021-11-07 13:14:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25067 states, 24766 states have (on average 1.4657191310667852) internal successors, (36300), 24778 states have internal predecessors, (36300), 192 states have call successors, (192), 108 states have call predecessors, (192), 108 states have return successors, (288), 188 states have call predecessors, (288), 192 states have call successors, (288) [2021-11-07 13:14:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25067 states to 25067 states and 36780 transitions. [2021-11-07 13:14:31,965 INFO L78 Accepts]: Start accepts. Automaton has 25067 states and 36780 transitions. Word has length 50 [2021-11-07 13:14:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:14:31,966 INFO L470 AbstractCegarLoop]: Abstraction has 25067 states and 36780 transitions. [2021-11-07 13:14:31,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 25067 states and 36780 transitions. [2021-11-07 13:14:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 13:14:31,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:14:31,989 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 13:14:31,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:14:31,990 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:14:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:14:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash 509003370, now seen corresponding path program 1 times [2021-11-07 13:14:31,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:14:31,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019133448] [2021-11-07 13:14:31,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:14:31,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:14:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:14:32,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:14:32,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019133448] [2021-11-07 13:14:32,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019133448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:14:32,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:14:32,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:14:32,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252286662] [2021-11-07 13:14:32,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:14:32,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:14:32,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:14:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:14:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:14:32,209 INFO L87 Difference]: Start difference. First operand 25067 states and 36780 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:33,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:14:33,144 INFO L93 Difference]: Finished difference Result 71177 states and 105022 transitions. [2021-11-07 13:14:33,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:14:33,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 13:14:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:14:33,317 INFO L225 Difference]: With dead ends: 71177 [2021-11-07 13:14:33,318 INFO L226 Difference]: Without dead ends: 46171 [2021-11-07 13:14:33,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:14:33,384 INFO L933 BasicCegarLoop]: 9346 mSDtfsCounter, 7976 mSDsluCounter, 9207 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7976 SdHoareTripleChecker+Valid, 18553 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.62ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.18ms IncrementalHoareTripleChecker+Time [2021-11-07 13:14:33,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7976 Valid, 18553 Invalid, 8 Unknown, 0 Unchecked, 19.62ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 47.18ms Time] [2021-11-07 13:14:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46171 states. [2021-11-07 13:14:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46171 to 46117. [2021-11-07 13:14:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46117 states, 45520 states have (on average 1.4785149384885765) internal successors, (67302), 45544 states have internal predecessors, (67302), 380 states have call successors, (380), 216 states have call predecessors, (380), 216 states have return successors, (570), 372 states have call predecessors, (570), 380 states have call successors, (570) [2021-11-07 13:14:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46117 states to 46117 states and 68252 transitions. [2021-11-07 13:14:34,502 INFO L78 Accepts]: Start accepts. Automaton has 46117 states and 68252 transitions. Word has length 108 [2021-11-07 13:14:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:14:34,502 INFO L470 AbstractCegarLoop]: Abstraction has 46117 states and 68252 transitions. [2021-11-07 13:14:34,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 46117 states and 68252 transitions. [2021-11-07 13:14:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 13:14:34,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:14:34,546 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 13:14:34,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:14:34,546 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:14:34,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:14:34,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1771568411, now seen corresponding path program 1 times [2021-11-07 13:14:34,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:14:34,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824278158] [2021-11-07 13:14:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:14:34,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:14:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-07 13:14:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-07 13:14:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-07 13:14:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 13:14:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:14:35,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:14:35,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824278158] [2021-11-07 13:14:35,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824278158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:14:35,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:14:35,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:14:35,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162129986] [2021-11-07 13:14:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:14:35,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:14:35,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:14:35,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:14:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:14:35,021 INFO L87 Difference]: Start difference. First operand 46117 states and 68252 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 13:14:37,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:14:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:14:46,805 INFO L93 Difference]: Finished difference Result 113935 states and 168662 transitions. [2021-11-07 13:14:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 13:14:46,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2021-11-07 13:14:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:14:47,225 INFO L225 Difference]: With dead ends: 113935 [2021-11-07 13:14:47,226 INFO L226 Difference]: Without dead ends: 67879 [2021-11-07 13:14:47,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.33ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:14:47,347 INFO L933 BasicCegarLoop]: 14976 mSDtfsCounter, 7525 mSDsluCounter, 35219 mSDsCounter, 0 mSdLazyCounter, 4383 mSolverCounterSat, 212 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9089.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7535 SdHoareTripleChecker+Valid, 50195 SdHoareTripleChecker+Invalid, 4596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.41ms SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 4383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10140.45ms IncrementalHoareTripleChecker+Time [2021-11-07 13:14:47,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7535 Valid, 50195 Invalid, 4596 Unknown, 0 Unchecked, 81.41ms Time], IncrementalHoareTripleChecker [212 Valid, 4383 Invalid, 1 Unknown, 0 Unchecked, 10140.45ms Time] [2021-11-07 13:14:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67879 states. [2021-11-07 13:14:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67879 to 65467. [2021-11-07 13:14:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65467 states, 64494 states have (on average 1.46317486898006) internal successors, (94366), 64566 states have internal predecessors, (94366), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-07 13:14:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65467 states to 65467 states and 95918 transitions. [2021-11-07 13:14:48,963 INFO L78 Accepts]: Start accepts. Automaton has 65467 states and 95918 transitions. Word has length 134 [2021-11-07 13:14:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:14:48,964 INFO L470 AbstractCegarLoop]: Abstraction has 65467 states and 95918 transitions. [2021-11-07 13:14:48,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 13:14:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 65467 states and 95918 transitions. [2021-11-07 13:14:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 13:14:49,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:14:49,002 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:14:49,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:14:49,002 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:14:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:14:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1472630836, now seen corresponding path program 1 times [2021-11-07 13:14:49,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:14:49,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144324765] [2021-11-07 13:14:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:14:49,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:14:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:14:49,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:14:49,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144324765] [2021-11-07 13:14:49,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144324765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:14:49,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:14:49,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:14:49,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634248810] [2021-11-07 13:14:49,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:14:49,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:14:49,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:14:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:14:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:14:49,214 INFO L87 Difference]: Start difference. First operand 65467 states and 95918 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:14:51,612 INFO L93 Difference]: Finished difference Result 200796 states and 295031 transitions. [2021-11-07 13:14:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:14:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-07 13:14:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:14:52,229 INFO L225 Difference]: With dead ends: 200796 [2021-11-07 13:14:52,229 INFO L226 Difference]: Without dead ends: 135390 [2021-11-07 13:14:52,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:14:52,369 INFO L933 BasicCegarLoop]: 13289 mSDtfsCounter, 12379 mSDsluCounter, 22371 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12397 SdHoareTripleChecker+Valid, 35660 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.64ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.02ms IncrementalHoareTripleChecker+Time [2021-11-07 13:14:52,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12397 Valid, 35660 Invalid, 204 Unknown, 0 Unchecked, 34.64ms Time], IncrementalHoareTripleChecker [56 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 204.02ms Time] [2021-11-07 13:14:52,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135390 states. [2021-11-07 13:14:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135390 to 65563. [2021-11-07 13:14:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65563 states, 64590 states have (on average 1.462486453011302) internal successors, (94462), 64662 states have internal predecessors, (94462), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-07 13:14:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65563 states to 65563 states and 96014 transitions. [2021-11-07 13:14:54,817 INFO L78 Accepts]: Start accepts. Automaton has 65563 states and 96014 transitions. Word has length 133 [2021-11-07 13:14:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:14:54,818 INFO L470 AbstractCegarLoop]: Abstraction has 65563 states and 96014 transitions. [2021-11-07 13:14:54,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:14:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 65563 states and 96014 transitions. [2021-11-07 13:14:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 13:14:54,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:14:54,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:14:54,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:14:54,870 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:14:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:14:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1926288880, now seen corresponding path program 1 times [2021-11-07 13:14:54,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:14:54,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523376733] [2021-11-07 13:14:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:14:54,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:14:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:14:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:14:55,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:14:55,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523376733] [2021-11-07 13:14:55,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523376733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:14:55,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:14:55,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 13:14:55,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215003402] [2021-11-07 13:14:55,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:14:55,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 13:14:55,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:14:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 13:14:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 13:14:55,135 INFO L87 Difference]: Start difference. First operand 65563 states and 96014 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:15:00,441 INFO L93 Difference]: Finished difference Result 246740 states and 362935 transitions. [2021-11-07 13:15:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 13:15:00,442 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-07 13:15:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:15:01,155 INFO L225 Difference]: With dead ends: 246740 [2021-11-07 13:15:01,155 INFO L226 Difference]: Without dead ends: 181238 [2021-11-07 13:15:01,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 150.92ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-07 13:15:01,292 INFO L933 BasicCegarLoop]: 25432 mSDtfsCounter, 41480 mSDsluCounter, 116256 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 859.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41489 SdHoareTripleChecker+Valid, 141688 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.06ms SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 971.91ms IncrementalHoareTripleChecker+Time [2021-11-07 13:15:01,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41489 Valid, 141688 Invalid, 1414 Unknown, 0 Unchecked, 108.06ms Time], IncrementalHoareTripleChecker [303 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 971.91ms Time] [2021-11-07 13:15:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181238 states. [2021-11-07 13:15:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181238 to 65659. [2021-11-07 13:15:03,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65659 states, 64686 states have (on average 1.4618000803883375) internal successors, (94558), 64758 states have internal predecessors, (94558), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-07 13:15:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 96110 transitions. [2021-11-07 13:15:04,066 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 96110 transitions. Word has length 136 [2021-11-07 13:15:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:15:04,067 INFO L470 AbstractCegarLoop]: Abstraction has 65659 states and 96110 transitions. [2021-11-07 13:15:04,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 96110 transitions. [2021-11-07 13:15:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 13:15:04,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:15:04,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:15:04,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:15:04,100 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:15:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:15:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1620447595, now seen corresponding path program 1 times [2021-11-07 13:15:04,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:15:04,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829010996] [2021-11-07 13:15:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:15:04,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:15:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:15:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:15:04,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:15:04,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829010996] [2021-11-07 13:15:04,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829010996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:15:04,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:15:04,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:15:04,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703077887] [2021-11-07 13:15:04,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:15:04,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:15:04,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:15:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:15:04,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:15:04,683 INFO L87 Difference]: Start difference. First operand 65659 states and 96110 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:15:06,268 INFO L93 Difference]: Finished difference Result 131266 states and 192159 transitions. [2021-11-07 13:15:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:15:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-07 13:15:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:15:06,529 INFO L225 Difference]: With dead ends: 131266 [2021-11-07 13:15:06,529 INFO L226 Difference]: Without dead ends: 65661 [2021-11-07 13:15:06,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:15:06,678 INFO L933 BasicCegarLoop]: 9202 mSDtfsCounter, 0 mSDsluCounter, 9192 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18394 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.83ms IncrementalHoareTripleChecker+Time [2021-11-07 13:15:06,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18394 Invalid, 14 Unknown, 0 Unchecked, 10.98ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 16.83ms Time] [2021-11-07 13:15:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65661 states. [2021-11-07 13:15:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65661 to 65661. [2021-11-07 13:15:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65661 states, 64688 states have (on average 1.4617858026218156) internal successors, (94560), 64760 states have internal predecessors, (94560), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-07 13:15:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65661 states to 65661 states and 96112 transitions. [2021-11-07 13:15:08,692 INFO L78 Accepts]: Start accepts. Automaton has 65661 states and 96112 transitions. Word has length 138 [2021-11-07 13:15:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:15:08,693 INFO L470 AbstractCegarLoop]: Abstraction has 65661 states and 96112 transitions. [2021-11-07 13:15:08,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 65661 states and 96112 transitions. [2021-11-07 13:15:08,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 13:15:08,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:15:08,727 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:15:08,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:15:08,728 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:15:08,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:15:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1871301679, now seen corresponding path program 1 times [2021-11-07 13:15:08,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:15:08,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368746338] [2021-11-07 13:15:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:15:08,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:15:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:15:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 13:15:09,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:15:09,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368746338] [2021-11-07 13:15:09,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368746338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:15:09,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056238766] [2021-11-07 13:15:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:15:09,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:15:09,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:15:09,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:15:09,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 13:15:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:15:10,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 3495 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 13:15:10,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:15:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 13:15:10,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:15:10,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056238766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:15:10,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:15:10,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 13:15:10,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429368258] [2021-11-07 13:15:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:15:10,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:15:10,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:15:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:15:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:15:10,877 INFO L87 Difference]: Start difference. First operand 65661 states and 96112 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:12,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []