./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU --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-dev-9ad7fb2 [2021-11-02 23:15:03,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:15:03,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:15:03,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:15:03,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:15:03,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:15:03,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:15:03,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:15:03,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:15:03,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:15:03,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:15:03,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:15:03,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:15:03,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:15:03,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:15:03,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:15:03,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:15:03,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:15:03,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:15:03,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:15:03,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:15:03,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:15:03,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:15:03,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:15:03,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:15:03,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:15:03,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:15:03,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:15:03,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:15:03,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:15:03,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:15:03,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:15:03,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:15:03,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:15:03,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:15:03,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:15:03,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:15:03,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:15:03,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:15:03,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:15:03,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:15:03,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:15:03,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:15:03,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:15:03,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:15:03,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:15:03,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:15:03,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:15:03,886 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:15:03,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:15:03,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:15:03,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:15:03,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:15:03,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:15:03,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:15:03,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:15:03,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:15:03,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:15:03,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:15:03,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:15:03,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:15:03,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:15:03,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:15:03,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:15:03,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:15:03,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:15:03,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:15:03,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:15:03,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:15:03,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:15:03,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:15:03,893 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_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf [2021-11-02 23:15:04,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:15:04,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:15:04,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:15:04,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:15:04,222 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:15:04,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/../../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 [2021-11-02 23:15:04,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/data/03c7e14e3/3a2a2685197445a492cbce49e874a845/FLAGbcd7544cc [2021-11-02 23:15:05,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:15:05,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/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 [2021-11-02 23:15:05,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/data/03c7e14e3/3a2a2685197445a492cbce49e874a845/FLAGbcd7544cc [2021-11-02 23:15:05,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/data/03c7e14e3/3a2a2685197445a492cbce49e874a845 [2021-11-02 23:15:05,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:15:05,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:15:05,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:15:05,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:15:05,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:15:05,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:15:05" (1/1) ... [2021-11-02 23:15:05,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1326011a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:05, skipping insertion in model container [2021-11-02 23:15:05,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:15:05" (1/1) ... [2021-11-02 23:15:05,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:15:05,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:15:07,358 WARN L228 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_104caf63-3658-474f-8d95-8ccd9e8a8831/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] [2021-11-02 23:15:09,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:15:09,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:15:09,634 WARN L228 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_104caf63-3658-474f-8d95-8ccd9e8a8831/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] [2021-11-02 23:15:10,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:15:10,459 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:15:10,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10 WrapperNode [2021-11-02 23:15:10,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:15:10,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:15:10,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:15:10,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:15:10,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:10,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:11,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:15:11,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:15:11,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:15:11,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:15:11,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:11,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:11,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:11,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:12,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:12,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:12,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:13,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:15:13,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:15:13,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:15:13,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:15:13,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (1/1) ... [2021-11-02 23:15:13,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:15:13,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:13,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:15:13,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:15:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure __team_change_mode [2021-11-02 23:15:13,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_change_mode [2021-11-02 23:15:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure team_init [2021-11-02 23:15:13,401 INFO L138 BoogieDeclarations]: Found implementation of procedure team_init [2021-11-02 23:15:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure team_del_slave [2021-11-02 23:15:13,402 INFO L138 BoogieDeclarations]: Found implementation of procedure team_del_slave [2021-11-02 23:15:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_set [2021-11-02 23:15:13,402 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_set [2021-11-02 23:15:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_add [2021-11-02 23:15:13,403 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_add [2021-11-02 23:15:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:15:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure team_add_slave [2021-11-02 23:15:13,403 INFO L138 BoogieDeclarations]: Found implementation of procedure team_add_slave [2021-11-02 23:15:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure team_mode_option_set [2021-11-02 23:15:13,404 INFO L138 BoogieDeclarations]: Found implementation of procedure team_mode_option_set [2021-11-02 23:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure team_change_mode [2021-11-02 23:15:13,405 INFO L138 BoogieDeclarations]: Found implementation of procedure team_change_mode [2021-11-02 23:15:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-02 23:15:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:15:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:15:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 23:15:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:15:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:15:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 23:15:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 23:15:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_set [2021-11-02 23:15:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_set [2021-11-02 23:15:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_del [2021-11-02 23:15:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_del [2021-11-02 23:15:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:15:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:15:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_register [2021-11-02 23:15:13,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_register [2021-11-02 23:15:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_change_check [2021-11-02 23:15:13,408 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_change_check [2021-11-02 23:15:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:15:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:15:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_register [2021-11-02 23:15:13,409 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_register [2021-11-02 23:15:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_option [2021-11-02 23:15:13,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_option [2021-11-02 23:15:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-02 23:15:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:15:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:15:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_get [2021-11-02 23:15:13,411 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_get [2021-11-02 23:15:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:15:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_fill_one_option_get [2021-11-02 23:15:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_fill_one_option_get [2021-11-02 23:15:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:15:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_get [2021-11-02 23:15:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_get [2021-11-02 23:15:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_options_get [2021-11-02 23:15:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_options_get [2021-11-02 23:15:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_port [2021-11-02 23:15:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_port [2021-11-02 23:15:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_change_check [2021-11-02 23:15:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_change_check [2021-11-02 23:15:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 23:15:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 23:15:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_enter [2021-11-02 23:15:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_enter [2021-11-02 23:15:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:15:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_event_options_get [2021-11-02 23:15:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_event_options_get [2021-11-02 23:15:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure team_uninit [2021-11-02 23:15:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure team_uninit [2021-11-02 23:15:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add [2021-11-02 23:15:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add [2021-11-02 23:15:37,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:15:37,555 INFO L299 CfgBuilder]: Removed 5565 assume(true) statements. [2021-11-02 23:15:37,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:15:37 BoogieIcfgContainer [2021-11-02 23:15:37,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:15:37,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:15:37,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:15:37,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:15:37,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:15:05" (1/3) ... [2021-11-02 23:15:37,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703cae12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:15:37, skipping insertion in model container [2021-11-02 23:15:37,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:10" (2/3) ... [2021-11-02 23:15:37,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703cae12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:15:37, skipping insertion in model container [2021-11-02 23:15:37,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:15:37" (3/3) ... [2021-11-02 23:15:37,576 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 [2021-11-02 23:15:37,582 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:15:37,582 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 23:15:37,669 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:15:37,677 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 [2021-11-02 23:15:37,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 23:15:37,820 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) [2021-11-02 23:15:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 23:15:37,835 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:37,836 INFO L513 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] [2021-11-02 23:15:37,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1443674913, now seen corresponding path program 1 times [2021-11-02 23:15:37,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:37,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526997212] [2021-11-02 23:15:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:37,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:38,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:38,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526997212] [2021-11-02 23:15:38,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526997212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:38,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:38,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:38,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513779597] [2021-11-02 23:15:38,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:38,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:38,633 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) [2021-11-02 23:15:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:39,065 INFO L93 Difference]: Finished difference Result 12743 states and 18957 transitions. [2021-11-02 23:15:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:39,068 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 [2021-11-02 23:15:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:39,125 INFO L225 Difference]: With dead ends: 12743 [2021-11-02 23:15:39,126 INFO L226 Difference]: Without dead ends: 6358 [2021-11-02 23:15:39,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2021-11-02 23:15:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6358. [2021-11-02 23:15:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 6282 states have (on average 1.463546641197071) internal successors, (9194), 6285 states have internal predecessors, (9194), 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) [2021-11-02 23:15:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9290 transitions. [2021-11-02 23:15:39,454 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9290 transitions. Word has length 47 [2021-11-02 23:15:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:39,455 INFO L470 AbstractCegarLoop]: Abstraction has 6358 states and 9290 transitions. [2021-11-02 23:15:39,455 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) [2021-11-02 23:15:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9290 transitions. [2021-11-02 23:15:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 23:15:39,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:39,461 INFO L513 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] [2021-11-02 23:15:39,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:15:39,461 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1101231259, now seen corresponding path program 1 times [2021-11-02 23:15:39,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:39,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998300744] [2021-11-02 23:15:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:39,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 23:15:39,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:39,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998300744] [2021-11-02 23:15:39,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998300744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:39,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:39,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:39,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806513210] [2021-11-02 23:15:39,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:39,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:39,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:39,741 INFO L87 Difference]: Start difference. First operand 6358 states and 9290 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-02 23:15:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:40,191 INFO L93 Difference]: Finished difference Result 12657 states and 18509 transitions. [2021-11-02 23:15:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:40,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-02 23:15:40,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:40,234 INFO L225 Difference]: With dead ends: 12657 [2021-11-02 23:15:40,235 INFO L226 Difference]: Without dead ends: 6359 [2021-11-02 23:15:40,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6359 states. [2021-11-02 23:15:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6359 to 6359. [2021-11-02 23:15:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 6283 states have (on average 1.4634728632818716) internal successors, (9195), 6286 states have internal predecessors, (9195), 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) [2021-11-02 23:15:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 9291 transitions. [2021-11-02 23:15:40,449 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 9291 transitions. Word has length 49 [2021-11-02 23:15:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:40,450 INFO L470 AbstractCegarLoop]: Abstraction has 6359 states and 9291 transitions. [2021-11-02 23:15:40,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-02 23:15:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 9291 transitions. [2021-11-02 23:15:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 23:15:40,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:40,453 INFO L513 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] [2021-11-02 23:15:40,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:15:40,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1185725313, now seen corresponding path program 1 times [2021-11-02 23:15:40,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:40,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381506817] [2021-11-02 23:15:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:40,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:15:40,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:40,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381506817] [2021-11-02 23:15:40,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381506817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:40,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:40,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:40,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869073244] [2021-11-02 23:15:40,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:40,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:40,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:40,729 INFO L87 Difference]: Start difference. First operand 6359 states and 9291 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-11-02 23:15:40,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:40,961 INFO L93 Difference]: Finished difference Result 12656 states and 18507 transitions. [2021-11-02 23:15:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:40,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 [2021-11-02 23:15:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:41,006 INFO L225 Difference]: With dead ends: 12656 [2021-11-02 23:15:41,006 INFO L226 Difference]: Without dead ends: 6360 [2021-11-02 23:15:41,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2021-11-02 23:15:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 6360. [2021-11-02 23:15:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6284 states have (on average 1.4633991088478675) internal successors, (9196), 6287 states have internal predecessors, (9196), 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) [2021-11-02 23:15:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9292 transitions. [2021-11-02 23:15:41,259 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9292 transitions. Word has length 50 [2021-11-02 23:15:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:41,259 INFO L470 AbstractCegarLoop]: Abstraction has 6360 states and 9292 transitions. [2021-11-02 23:15:41,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-11-02 23:15:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9292 transitions. [2021-11-02 23:15:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 23:15:41,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:41,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:41,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:15:41,263 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -410931799, now seen corresponding path program 1 times [2021-11-02 23:15:41,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:41,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915807093] [2021-11-02 23:15:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:41,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 23:15:41,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:41,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915807093] [2021-11-02 23:15:41,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915807093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:41,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:41,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:41,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894441933] [2021-11-02 23:15:41,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:41,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:41,526 INFO L87 Difference]: Start difference. First operand 6360 states and 9292 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 23:15:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:44,275 INFO L93 Difference]: Finished difference Result 18900 states and 27660 transitions. [2021-11-02 23:15:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:44,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-02 23:15:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:44,380 INFO L225 Difference]: With dead ends: 18900 [2021-11-02 23:15:44,380 INFO L226 Difference]: Without dead ends: 12605 [2021-11-02 23:15:44,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2021-11-02 23:15:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 12605. [2021-11-02 23:15:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12605 states, 12454 states have (on average 1.465553235908142) internal successors, (18252), 12460 states have internal predecessors, (18252), 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) [2021-11-02 23:15:44,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12605 states to 12605 states and 18444 transitions. [2021-11-02 23:15:44,826 INFO L78 Accepts]: Start accepts. Automaton has 12605 states and 18444 transitions. Word has length 51 [2021-11-02 23:15:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:44,830 INFO L470 AbstractCegarLoop]: Abstraction has 12605 states and 18444 transitions. [2021-11-02 23:15:44,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 23:15:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 12605 states and 18444 transitions. [2021-11-02 23:15:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 23:15:44,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:44,834 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:44,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:15:44,835 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:44,841 INFO L85 PathProgramCache]: Analyzing trace with hash 328131653, now seen corresponding path program 1 times [2021-11-02 23:15:44,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:44,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342697870] [2021-11-02 23:15:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:44,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 23:15:45,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:45,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342697870] [2021-11-02 23:15:45,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342697870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:45,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:45,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:15:45,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035126679] [2021-11-02 23:15:45,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:15:45,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:15:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:15:45,203 INFO L87 Difference]: Start difference. First operand 12605 states and 18444 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2021-11-02 23:15:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:46,821 INFO L93 Difference]: Finished difference Result 37683 states and 55365 transitions. [2021-11-02 23:15:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:15:46,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-11-02 23:15:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:46,970 INFO L225 Difference]: With dead ends: 37683 [2021-11-02 23:15:46,970 INFO L226 Difference]: Without dead ends: 25135 [2021-11-02 23:15:47,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:15:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25135 states. [2021-11-02 23:15:47,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25135 to 25071. [2021-11-02 23:15:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25071 states, 24770 states have (on average 1.465643924101736) internal successors, (36304), 24782 states have internal predecessors, (36304), 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) [2021-11-02 23:15:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25071 states to 25071 states and 36784 transitions. [2021-11-02 23:15:48,096 INFO L78 Accepts]: Start accepts. Automaton has 25071 states and 36784 transitions. Word has length 54 [2021-11-02 23:15:48,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:48,099 INFO L470 AbstractCegarLoop]: Abstraction has 25071 states and 36784 transitions. [2021-11-02 23:15:48,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2021-11-02 23:15:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 25071 states and 36784 transitions. [2021-11-02 23:15:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 23:15:48,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:48,135 INFO L513 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, 1, 1, 1, 1] [2021-11-02 23:15:48,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:15:48,135 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2012061470, now seen corresponding path program 1 times [2021-11-02 23:15:48,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:48,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399457504] [2021-11-02 23:15:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:48,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 23:15:48,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:48,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399457504] [2021-11-02 23:15:48,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399457504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:48,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:48,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:48,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830792456] [2021-11-02 23:15:48,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:48,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:48,404 INFO L87 Difference]: Start difference. First operand 25071 states and 36784 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-02 23:15:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:49,907 INFO L93 Difference]: Finished difference Result 71181 states and 105026 transitions. [2021-11-02 23:15:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2021-11-02 23:15:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:50,129 INFO L225 Difference]: With dead ends: 71181 [2021-11-02 23:15:50,130 INFO L226 Difference]: Without dead ends: 46175 [2021-11-02 23:15:50,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46175 states. [2021-11-02 23:15:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46175 to 46121. [2021-11-02 23:15:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46121 states, 45524 states have (on average 1.478472893418856) internal successors, (67306), 45548 states have internal predecessors, (67306), 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) [2021-11-02 23:15:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46121 states to 46121 states and 68256 transitions. [2021-11-02 23:15:51,919 INFO L78 Accepts]: Start accepts. Automaton has 46121 states and 68256 transitions. Word has length 112 [2021-11-02 23:15:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:51,921 INFO L470 AbstractCegarLoop]: Abstraction has 46121 states and 68256 transitions. [2021-11-02 23:15:51,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-02 23:15:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 46121 states and 68256 transitions. [2021-11-02 23:15:52,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 23:15:52,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:52,001 INFO L513 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, 1, 1, 1, 1] [2021-11-02 23:15:52,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:15:52,002 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1636370595, now seen corresponding path program 1 times [2021-11-02 23:15:52,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:52,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982886381] [2021-11-02 23:15:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:52,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-02 23:15:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-02 23:15:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-02 23:15:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:52,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-02 23:15:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 23:15:52,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:52,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982886381] [2021-11-02 23:15:52,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982886381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:52,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:52,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:15:52,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190701841] [2021-11-02 23:15:52,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:15:52,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:15:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:15:52,676 INFO L87 Difference]: Start difference. First operand 46121 states and 68256 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 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) [2021-11-02 23:16:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:08,650 INFO L93 Difference]: Finished difference Result 113939 states and 168666 transitions. [2021-11-02 23:16:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:16:08,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 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 138 [2021-11-02 23:16:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:09,130 INFO L225 Difference]: With dead ends: 113939 [2021-11-02 23:16:09,130 INFO L226 Difference]: Without dead ends: 67883 [2021-11-02 23:16:09,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:16:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67883 states. [2021-11-02 23:16:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67883 to 65471. [2021-11-02 23:16:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65471 states, 64498 states have (on average 1.4631461440664826) internal successors, (94370), 64570 states have internal predecessors, (94370), 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) [2021-11-02 23:16:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65471 states to 65471 states and 95922 transitions. [2021-11-02 23:16:11,905 INFO L78 Accepts]: Start accepts. Automaton has 65471 states and 95922 transitions. Word has length 138 [2021-11-02 23:16:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:11,907 INFO L470 AbstractCegarLoop]: Abstraction has 65471 states and 95922 transitions. [2021-11-02 23:16:11,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 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) [2021-11-02 23:16:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 65471 states and 95922 transitions. [2021-11-02 23:16:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 23:16:11,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:11,976 INFO L513 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] [2021-11-02 23:16:11,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:16:11,977 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:16:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1329722284, now seen corresponding path program 1 times [2021-11-02 23:16:11,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:11,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443892997] [2021-11-02 23:16:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:11,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 23:16:12,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:12,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443892997] [2021-11-02 23:16:12,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443892997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:12,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:12,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:16:12,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012274350] [2021-11-02 23:16:12,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:16:12,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:16:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:16:12,629 INFO L87 Difference]: Start difference. First operand 65471 states and 95922 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-11-02 23:16:15,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:15,960 INFO L93 Difference]: Finished difference Result 200804 states and 295039 transitions. [2021-11-02 23:16:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:16:15,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 137 [2021-11-02 23:16:15,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:16,411 INFO L225 Difference]: With dead ends: 200804 [2021-11-02 23:16:16,412 INFO L226 Difference]: Without dead ends: 135398 [2021-11-02 23:16:16,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135398 states. [2021-11-02 23:16:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135398 to 65567. [2021-11-02 23:16:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65567 states, 64594 states have (on average 1.462457813419203) internal successors, (94466), 64666 states have internal predecessors, (94466), 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) [2021-11-02 23:16:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65567 states to 65567 states and 96018 transitions. [2021-11-02 23:16:19,869 INFO L78 Accepts]: Start accepts. Automaton has 65567 states and 96018 transitions. Word has length 137 [2021-11-02 23:16:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:19,870 INFO L470 AbstractCegarLoop]: Abstraction has 65567 states and 96018 transitions. [2021-11-02 23:16:19,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-11-02 23:16:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 65567 states and 96018 transitions. [2021-11-02 23:16:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-02 23:16:19,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:19,923 INFO L513 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] [2021-11-02 23:16:19,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 23:16:19,923 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:16:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1292596120, now seen corresponding path program 1 times [2021-11-02 23:16:19,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:19,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286301359] [2021-11-02 23:16:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:19,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 23:16:20,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:20,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286301359] [2021-11-02 23:16:20,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286301359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:20,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:20,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 23:16:20,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761079419] [2021-11-02 23:16:20,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 23:16:20,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 23:16:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:16:20,713 INFO L87 Difference]: Start difference. First operand 65567 states and 96018 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 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) [2021-11-02 23:16:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:28,412 INFO L93 Difference]: Finished difference Result 246748 states and 362943 transitions. [2021-11-02 23:16:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 23:16:28,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 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) Word has length 140 [2021-11-02 23:16:28,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:28,973 INFO L225 Difference]: With dead ends: 246748 [2021-11-02 23:16:28,973 INFO L226 Difference]: Without dead ends: 181246 [2021-11-02 23:16:29,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-02 23:16:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181246 states. [2021-11-02 23:16:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181246 to 65663. [2021-11-02 23:16:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65663 states, 64690 states have (on average 1.4617715257381356) internal successors, (94562), 64762 states have internal predecessors, (94562), 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) [2021-11-02 23:16:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65663 states to 65663 states and 96114 transitions. [2021-11-02 23:16:33,289 INFO L78 Accepts]: Start accepts. Automaton has 65663 states and 96114 transitions. Word has length 140 [2021-11-02 23:16:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:33,290 INFO L470 AbstractCegarLoop]: Abstraction has 65663 states and 96114 transitions. [2021-11-02 23:16:33,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 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) [2021-11-02 23:16:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 65663 states and 96114 transitions. [2021-11-02 23:16:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 23:16:33,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:33,331 INFO L513 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, 1, 1] [2021-11-02 23:16:33,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 23:16:33,331 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:16:33,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1702487821, now seen corresponding path program 1 times [2021-11-02 23:16:33,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:33,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444952906] [2021-11-02 23:16:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:33,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 23:16:33,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:33,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444952906] [2021-11-02 23:16:33,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444952906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:33,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714608538] [2021-11-02 23:16:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:33,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:33,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:33,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:33,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_104caf63-3658-474f-8d95-8ccd9e8a8831/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process