./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/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_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0 --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-aef121e [2021-11-22 14:47:00,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:47:00,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:47:00,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:47:00,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:47:00,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:47:00,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:47:00,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:47:00,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:47:00,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:47:00,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:47:00,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:47:00,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:47:00,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:47:00,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:47:00,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:47:00,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:47:00,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:47:00,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:47:00,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:47:00,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:47:00,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:47:00,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:47:00,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:47:00,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:47:00,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:47:00,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:47:00,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:47:00,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:47:00,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:47:00,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:47:00,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:47:00,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:47:00,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:47:00,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:47:00,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:47:00,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:47:00,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:47:00,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:47:00,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:47:00,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:47:00,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 14:47:00,467 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:47:00,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:47:00,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:47:00,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:47:00,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:47:00,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:47:00,476 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:47:00,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:47:00,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:47:00,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:47:00,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:47:00,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:47:00,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:47:00,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:47:00,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:47:00,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:47:00,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:47:00,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:47:00,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:47:00,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:47:00,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:47:00,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:47:00,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:47:00,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:47:00,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:47:00,494 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:47:00,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:47:00,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:47:00,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:47:00,495 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_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf [2021-11-22 14:47:00,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:47:00,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:47:00,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:47:00,808 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:47:00,809 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:47:00,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/../../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 [2021-11-22 14:47:00,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/data/84e0b147b/8013ea834337425290c48fdf25507c66/FLAG045293bde [2021-11-22 14:47:01,849 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:47:01,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/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 [2021-11-22 14:47:01,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/data/84e0b147b/8013ea834337425290c48fdf25507c66/FLAG045293bde [2021-11-22 14:47:02,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/data/84e0b147b/8013ea834337425290c48fdf25507c66 [2021-11-22 14:47:02,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:47:02,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:47:02,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:47:02,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:47:02,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:47:02,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:02" (1/1) ... [2021-11-22 14:47:02,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f293fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:02, skipping insertion in model container [2021-11-22 14:47:02,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:02" (1/1) ... [2021-11-22 14:47:02,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:47:02,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:47:03,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/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] [2021-11-22 14:47:05,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:47:05,321 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:47:05,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/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] [2021-11-22 14:47:05,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:47:06,290 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:47:06,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06 WrapperNode [2021-11-22 14:47:06,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:47:06,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:47:06,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:47:06,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:47:06,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:06,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:07,324 INFO L137 Inliner]: procedures = 449, calls = 2520, calls flagged for inlining = 789, calls inlined = 2767, statements flattened = 35794 [2021-11-22 14:47:07,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:47:07,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:47:07,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:47:07,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:47:07,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:07,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:07,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:07,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:08,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:08,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:08,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:09,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:47:09,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:47:09,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:47:09,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:47:09,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (1/1) ... [2021-11-22 14:47:09,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:47:09,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:47:09,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:47:09,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60a2a6f-b9af-4019-84f0-d163bee14edd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:47:09,146 INFO L130 BoogieDeclarations]: Found specification of procedure __team_change_mode [2021-11-22 14:47:09,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_change_mode [2021-11-22 14:47:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure team_init [2021-11-22 14:47:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure team_init [2021-11-22 14:47:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure team_del_slave [2021-11-22 14:47:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure team_del_slave [2021-11-22 14:47:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_set [2021-11-22 14:47:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_set [2021-11-22 14:47:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_add [2021-11-22 14:47:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_add [2021-11-22 14:47:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:47:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure team_add_slave [2021-11-22 14:47:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure team_add_slave [2021-11-22 14:47:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 14:47:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 14:47:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:47:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure team_mode_option_set [2021-11-22 14:47:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure team_mode_option_set [2021-11-22 14:47:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure team_change_mode [2021-11-22 14:47:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure team_change_mode [2021-11-22 14:47:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-22 14:47:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:47:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:47:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 14:47:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 14:47:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 14:47:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 14:47:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-22 14:47:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-22 14:47:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_set [2021-11-22 14:47:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_set [2021-11-22 14:47:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_del [2021-11-22 14:47:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_del [2021-11-22 14:47:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:47:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:47:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_register [2021-11-22 14:47:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_register [2021-11-22 14:47:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_change_check [2021-11-22 14:47:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_change_check [2021-11-22 14:47:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 14:47:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 14:47:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_register [2021-11-22 14:47:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_register [2021-11-22 14:47:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_option [2021-11-22 14:47:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_option [2021-11-22 14:47:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-22 14:47:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:47:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 14:47:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_get [2021-11-22 14:47:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_get [2021-11-22 14:47:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 14:47:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_fill_one_option_get [2021-11-22 14:47:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_fill_one_option_get [2021-11-22 14:47:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:47:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_get [2021-11-22 14:47:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_get [2021-11-22 14:47:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_options_get [2021-11-22 14:47:09,158 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_options_get [2021-11-22 14:47:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_port [2021-11-22 14:47:09,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_port [2021-11-22 14:47:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_change_check [2021-11-22 14:47:09,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_change_check [2021-11-22 14:47:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 14:47:09,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 14:47:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_enter [2021-11-22 14:47:09,160 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_enter [2021-11-22 14:47:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:47:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_event_options_get [2021-11-22 14:47:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_event_options_get [2021-11-22 14:47:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure team_uninit [2021-11-22 14:47:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure team_uninit [2021-11-22 14:47:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add [2021-11-22 14:47:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add [2021-11-22 14:47:11,010 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:47:11,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:47:26,690 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:47:26,764 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:47:26,765 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-22 14:47:26,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:26 BoogieIcfgContainer [2021-11-22 14:47:26,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:47:26,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:47:26,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:47:26,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:47:26,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:47:02" (1/3) ... [2021-11-22 14:47:26,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e4aac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:26, skipping insertion in model container [2021-11-22 14:47:26,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:06" (2/3) ... [2021-11-22 14:47:26,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e4aac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:26, skipping insertion in model container [2021-11-22 14:47:26,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:26" (3/3) ... [2021-11-22 14:47:26,785 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 [2021-11-22 14:47:26,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:47:26,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:47:26,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:47:26,884 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 [2021-11-22 14:47:26,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:47:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 6720 states, 6643 states have (on average 1.4612373927442421) internal successors, (9707), 6647 states have internal predecessors, (9707), 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) [2021-11-22 14:47:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 14:47:27,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:27,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:27,028 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:47:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash -390362715, now seen corresponding path program 1 times [2021-11-22 14:47:27,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:27,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109782928] [2021-11-22 14:47:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:27,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:47:27,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:27,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109782928] [2021-11-22 14:47:27,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109782928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:27,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:27,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:47:27,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468029939] [2021-11-22 14:47:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:27,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:47:27,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:47:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:47:27,824 INFO L87 Difference]: Start difference. First operand has 6720 states, 6643 states have (on average 1.4612373927442421) internal successors, (9707), 6647 states have internal predecessors, (9707), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-22 14:47:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:47:28,961 INFO L93 Difference]: Finished difference Result 20035 states and 29340 transitions. [2021-11-22 14:47:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:47:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-22 14:47:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:47:29,102 INFO L225 Difference]: With dead ends: 20035 [2021-11-22 14:47:29,103 INFO L226 Difference]: Without dead ends: 13290 [2021-11-22 14:47:29,155 INFO L932 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 [2021-11-22 14:47:29,160 INFO L933 BasicCegarLoop]: 9709 mSDtfsCounter, 9531 mSDsluCounter, 9637 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9531 SdHoareTripleChecker+Valid, 19346 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:47:29,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9531 Valid, 19346 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:47:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13290 states. [2021-11-22 14:47:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13290 to 13290. [2021-11-22 14:47:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13290 states, 13139 states have (on average 1.4412816804931883) internal successors, (18937), 13145 states have internal predecessors, (18937), 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) [2021-11-22 14:47:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13290 states to 13290 states and 19129 transitions. [2021-11-22 14:47:29,958 INFO L78 Accepts]: Start accepts. Automaton has 13290 states and 19129 transitions. Word has length 48 [2021-11-22 14:47:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:47:29,959 INFO L470 AbstractCegarLoop]: Abstraction has 13290 states and 19129 transitions. [2021-11-22 14:47:29,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-22 14:47:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13290 states and 19129 transitions. [2021-11-22 14:47:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 14:47:29,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:29,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:29,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:47:29,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:47:29,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:29,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1291285566, now seen corresponding path program 1 times [2021-11-22 14:47:29,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39807498] [2021-11-22 14:47:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:29,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:47:30,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:30,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39807498] [2021-11-22 14:47:30,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39807498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:30,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:30,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:47:30,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286822573] [2021-11-22 14:47:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:30,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:47:30,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:47:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:47:30,296 INFO L87 Difference]: Start difference. First operand 13290 states and 19129 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2021-11-22 14:47:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:47:31,923 INFO L93 Difference]: Finished difference Result 39744 states and 57426 transitions. [2021-11-22 14:47:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:47:31,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 [2021-11-22 14:47:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:47:32,135 INFO L225 Difference]: With dead ends: 39744 [2021-11-22 14:47:32,136 INFO L226 Difference]: Without dead ends: 26508 [2021-11-22 14:47:32,211 INFO L932 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 [2021-11-22 14:47:32,212 INFO L933 BasicCegarLoop]: 9617 mSDtfsCounter, 9568 mSDsluCounter, 28738 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9568 SdHoareTripleChecker+Valid, 38355 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:47:32,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9568 Valid, 38355 Invalid, 379 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 14:47:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26508 states. [2021-11-22 14:47:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26508 to 26444. [2021-11-22 14:47:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26444 states, 26143 states have (on average 1.4411888459625903) internal successors, (37677), 26155 states have internal predecessors, (37677), 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) [2021-11-22 14:47:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26444 states to 26444 states and 38157 transitions. [2021-11-22 14:47:33,476 INFO L78 Accepts]: Start accepts. Automaton has 26444 states and 38157 transitions. Word has length 51 [2021-11-22 14:47:33,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:47:33,476 INFO L470 AbstractCegarLoop]: Abstraction has 26444 states and 38157 transitions. [2021-11-22 14:47:33,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2021-11-22 14:47:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 26444 states and 38157 transitions. [2021-11-22 14:47:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 14:47:33,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:33,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:33,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:47:33,516 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:47:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:33,517 INFO L85 PathProgramCache]: Analyzing trace with hash -68078514, now seen corresponding path program 1 times [2021-11-22 14:47:33,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:33,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902783250] [2021-11-22 14:47:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:33,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:47:33,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:33,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902783250] [2021-11-22 14:47:33,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902783250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:33,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:33,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:47:33,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530066594] [2021-11-22 14:47:33,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:33,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:47:33,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:47:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:47:33,827 INFO L87 Difference]: Start difference. First operand 26444 states and 38157 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-22 14:47:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:47:35,600 INFO L93 Difference]: Finished difference Result 75128 states and 108973 transitions. [2021-11-22 14:47:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:47:35,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-11-22 14:47:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:47:35,857 INFO L225 Difference]: With dead ends: 75128 [2021-11-22 14:47:35,857 INFO L226 Difference]: Without dead ends: 48746 [2021-11-22 14:47:35,930 INFO L932 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 [2021-11-22 14:47:35,934 INFO L933 BasicCegarLoop]: 9688 mSDtfsCounter, 8277 mSDsluCounter, 9552 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8277 SdHoareTripleChecker+Valid, 19240 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:47:35,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8277 Valid, 19240 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:47:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48746 states. [2021-11-22 14:47:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48746 to 48692. [2021-11-22 14:47:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48692 states, 48095 states have (on average 1.4528953113629275) internal successors, (69877), 48119 states have internal predecessors, (69877), 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) [2021-11-22 14:47:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48692 states to 48692 states and 70827 transitions. [2021-11-22 14:47:38,013 INFO L78 Accepts]: Start accepts. Automaton has 48692 states and 70827 transitions. Word has length 113 [2021-11-22 14:47:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:47:38,013 INFO L470 AbstractCegarLoop]: Abstraction has 48692 states and 70827 transitions. [2021-11-22 14:47:38,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-22 14:47:38,014 INFO L276 IsEmpty]: Start isEmpty. Operand 48692 states and 70827 transitions. [2021-11-22 14:47:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-22 14:47:38,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:38,090 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:38,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:47:38,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:47:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash -367332376, now seen corresponding path program 1 times [2021-11-22 14:47:38,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:38,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096559427] [2021-11-22 14:47:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:38,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-22 14:47:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-22 14:47:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:38,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-22 14:47:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-22 14:47:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:47:38,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:38,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096559427] [2021-11-22 14:47:38,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096559427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:38,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:38,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:47:38,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77166814] [2021-11-22 14:47:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:38,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:47:38,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:38,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:47:38,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:47:38,539 INFO L87 Difference]: Start difference. First operand 48692 states and 70827 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2021-11-22 14:47:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:47:51,132 INFO L93 Difference]: Finished difference Result 120076 states and 174803 transitions. [2021-11-22 14:47:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:47:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 136 [2021-11-22 14:47:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:47:51,483 INFO L225 Difference]: With dead ends: 120076 [2021-11-22 14:47:51,483 INFO L226 Difference]: Without dead ends: 71446 [2021-11-22 14:47:51,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:47:51,885 INFO L933 BasicCegarLoop]: 15531 mSDtfsCounter, 7774 mSDsluCounter, 36648 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7784 SdHoareTripleChecker+Valid, 52179 SdHoareTripleChecker+Invalid, 4595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 4382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:47:51,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7784 Valid, 52179 Invalid, 4595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [213 Valid, 4382 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2021-11-22 14:47:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71446 states. [2021-11-22 14:47:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71446 to 68950. [2021-11-22 14:47:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68950 states, 67977 states have (on average 1.4394427526957647) internal successors, (97849), 68049 states have internal predecessors, (97849), 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) [2021-11-22 14:47:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68950 states to 68950 states and 99401 transitions. [2021-11-22 14:47:54,467 INFO L78 Accepts]: Start accepts. Automaton has 68950 states and 99401 transitions. Word has length 136 [2021-11-22 14:47:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:47:54,469 INFO L470 AbstractCegarLoop]: Abstraction has 68950 states and 99401 transitions. [2021-11-22 14:47:54,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2021-11-22 14:47:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 68950 states and 99401 transitions. [2021-11-22 14:47:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-22 14:47:54,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:47:54,537 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:47:54,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:47:54,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:47:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:47:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 414591423, now seen corresponding path program 1 times [2021-11-22 14:47:54,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:47:54,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161796265] [2021-11-22 14:47:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:47:54,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:47:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:47:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:47:55,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:47:55,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161796265] [2021-11-22 14:47:55,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161796265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:47:55,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:47:55,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:47:55,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201646492] [2021-11-22 14:47:55,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:47:55,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:47:55,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:55,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:47:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:47:55,250 INFO L87 Difference]: Start difference. First operand 68950 states and 99401 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-22 14:47:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:47:58,741 INFO L93 Difference]: Finished difference Result 212304 states and 306539 transitions. [2021-11-22 14:47:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:47:58,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 139 [2021-11-22 14:47:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:47:59,272 INFO L225 Difference]: With dead ends: 212304 [2021-11-22 14:47:59,272 INFO L226 Difference]: Without dead ends: 143416 [2021-11-22 14:47:59,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:47:59,546 INFO L933 BasicCegarLoop]: 13815 mSDtfsCounter, 12948 mSDsluCounter, 23251 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12966 SdHoareTripleChecker+Valid, 37066 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:47:59,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12966 Valid, 37066 Invalid, 204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:47:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143416 states. [2021-11-22 14:48:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143416 to 69046. [2021-11-22 14:48:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69046 states, 68073 states have (on average 1.4388230282197054) internal successors, (97945), 68145 states have internal predecessors, (97945), 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) [2021-11-22 14:48:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69046 states to 69046 states and 99497 transitions. [2021-11-22 14:48:03,279 INFO L78 Accepts]: Start accepts. Automaton has 69046 states and 99497 transitions. Word has length 139 [2021-11-22 14:48:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:03,280 INFO L470 AbstractCegarLoop]: Abstraction has 69046 states and 99497 transitions. [2021-11-22 14:48:03,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-22 14:48:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 69046 states and 99497 transitions. [2021-11-22 14:48:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 14:48:03,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:03,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:03,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:48:03,330 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:48:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2111160247, now seen corresponding path program 1 times [2021-11-22 14:48:03,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:03,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697801] [2021-11-22 14:48:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:03,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:48:03,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:03,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697801] [2021-11-22 14:48:03,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:03,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:03,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 14:48:03,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164165936] [2021-11-22 14:48:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:03,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:48:03,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:48:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:48:03,653 INFO L87 Difference]: Start difference. First operand 69046 states and 99497 transitions. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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) [2021-11-22 14:48:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:48:11,305 INFO L93 Difference]: Finished difference Result 261276 states and 377471 transitions. [2021-11-22 14:48:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 14:48:11,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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 142 [2021-11-22 14:48:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:48:12,241 INFO L225 Difference]: With dead ends: 261276 [2021-11-22 14:48:12,242 INFO L226 Difference]: Without dead ends: 192292 [2021-11-22 14:48:12,412 INFO L932 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 [2021-11-22 14:48:12,414 INFO L933 BasicCegarLoop]: 26531 mSDtfsCounter, 43337 mSDsluCounter, 121111 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43346 SdHoareTripleChecker+Valid, 147642 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:48:12,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43346 Valid, 147642 Invalid, 1414 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [303 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 14:48:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192292 states. [2021-11-22 14:48:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192292 to 69142. [2021-11-22 14:48:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69142 states, 68169 states have (on average 1.4382050492159193) internal successors, (98041), 68241 states have internal predecessors, (98041), 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) [2021-11-22 14:48:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69142 states to 69142 states and 99593 transitions. [2021-11-22 14:48:16,350 INFO L78 Accepts]: Start accepts. Automaton has 69142 states and 99593 transitions. Word has length 142 [2021-11-22 14:48:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:48:16,352 INFO L470 AbstractCegarLoop]: Abstraction has 69142 states and 99593 transitions. [2021-11-22 14:48:16,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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) [2021-11-22 14:48:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 69142 states and 99593 transitions. [2021-11-22 14:48:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 14:48:16,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:48:16,402 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:48:16,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:48:16,403 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:48:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:48:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -425544764, now seen corresponding path program 1 times [2021-11-22 14:48:16,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:48:16,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556619286] [2021-11-22 14:48:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:48:16,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:48:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:48:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 14:48:17,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:48:17,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556619286] [2021-11-22 14:48:17,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556619286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:48:17,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:48:17,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:48:17,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338453013] [2021-11-22 14:48:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:48:17,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:48:17,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:48:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:48:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:48:17,519 INFO L87 Difference]: Start difference. First operand 69142 states and 99593 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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)