./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dbf26404e70c3394fd0367244976693545d30c1a748b5c7360fa4057d4decd8b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:41:21,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:41:21,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:41:21,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:41:21,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:41:21,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:41:21,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:41:21,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:41:21,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:41:21,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:41:21,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:41:21,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:41:21,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:41:21,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:41:21,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:41:21,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:41:21,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:41:21,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:41:21,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:41:21,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:41:21,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:41:21,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:41:21,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:41:21,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:41:21,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:41:21,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:41:21,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:41:21,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:41:21,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:41:21,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:41:21,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:41:21,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:41:21,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:41:21,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:41:21,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:41:21,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:41:21,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:41:21,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:41:21,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:41:21,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:41:21,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:41:21,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:41:21,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:41:21,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:41:21,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:41:21,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:41:21,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:41:21,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:41:21,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:41:21,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:41:21,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:41:21,836 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:41:21,837 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:41:21,837 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:41:21,838 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:41:21,838 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:41:21,838 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:41:21,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:41:21,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:41:21,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:41:21,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:41:21,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:41:21,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:41:21,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:41:21,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:41:21,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:41:21,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:41:21,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:41:21,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:41:21,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:21,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:41:21,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:41:21,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:41:21,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:41:21,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:41:21,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:41:21,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:41:21,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:41:21,848 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbf26404e70c3394fd0367244976693545d30c1a748b5c7360fa4057d4decd8b [2021-11-07 01:41:22,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:41:22,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:41:22,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:41:22,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:41:22,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:41:22,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 01:41:22,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/e431d51f6/6c5d9250bde04500a9034fd8e8edbeec/FLAG1b634c63f [2021-11-07 01:41:23,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:41:23,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 01:41:23,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/e431d51f6/6c5d9250bde04500a9034fd8e8edbeec/FLAG1b634c63f [2021-11-07 01:41:23,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/e431d51f6/6c5d9250bde04500a9034fd8e8edbeec [2021-11-07 01:41:23,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:41:23,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:41:23,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:23,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:41:23,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:41:23,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:23" (1/1) ... [2021-11-07 01:41:23,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395a7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:23, skipping insertion in model container [2021-11-07 01:41:23,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:23" (1/1) ... [2021-11-07 01:41:23,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:41:23,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:25,040 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,546 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,548 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,620 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,622 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,634 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,635 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,636 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,658 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,659 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,666 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,666 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,668 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,675 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,676 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,682 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,684 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,731 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,740 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,741 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,826 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,854 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,915 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,916 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,936 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,938 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,945 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,946 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,979 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:26,980 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,008 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,010 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,262 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,263 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,264 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,310 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,312 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,319 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,320 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,328 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,329 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,336 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,337 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,338 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,339 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,354 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,355 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,356 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,357 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,364 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,365 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,377 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,378 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,392 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,394 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,417 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,419 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,542 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,545 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,554 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,554 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,576 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,581 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,598 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,602 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,634 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,635 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,647 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,648 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:41:27,808 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_555c4c62-a693-4ba5-933a-e882b97be9ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i[393184,393197] [2021-11-07 01:41:27,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:27,996 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:41:27,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38a2ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:27, skipping insertion in model container [2021-11-07 01:41:27,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:27,998 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:41:28,001 INFO L168 Benchmark]: Toolchain (without parser) took 4279.62 ms. Allocated memory was 115.3 MB in the beginning and 161.5 MB in the end (delta: 46.1 MB). Free memory was 64.5 MB in the beginning and 91.1 MB in the end (delta: -26.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:28,002 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 77.6 MB. Free memory is still 34.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:41:28,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4274.41 ms. Allocated memory was 115.3 MB in the beginning and 161.5 MB in the end (delta: 46.1 MB). Free memory was 64.3 MB in the beginning and 91.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:28,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 77.6 MB. Free memory is still 34.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4274.41 ms. Allocated memory was 115.3 MB in the beginning and 161.5 MB in the end (delta: 46.1 MB). Free memory was 64.3 MB in the beginning and 91.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5880]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dbf26404e70c3394fd0367244976693545d30c1a748b5c7360fa4057d4decd8b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:41:30,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:41:30,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:41:30,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:41:30,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:41:30,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:41:30,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:41:30,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:41:30,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:41:30,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:41:30,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:41:30,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:41:30,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:41:30,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:41:30,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:41:30,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:41:30,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:41:30,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:41:30,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:41:30,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:41:30,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:41:30,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:41:30,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:41:30,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:41:30,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:41:30,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:41:30,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:41:30,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:41:30,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:41:30,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:41:30,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:41:30,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:41:30,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:41:30,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:41:30,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:41:30,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:41:30,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:41:30,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:41:30,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:41:30,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:41:30,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:41:30,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:41:30,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:41:30,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:41:30,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:41:30,726 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:41:30,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:41:30,727 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:41:30,727 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:41:30,727 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:41:30,727 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:41:30,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:41:30,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:41:30,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:41:30,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:41:30,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:41:30,729 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:41:30,730 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:41:30,730 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:41:30,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:41:30,731 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:41:30,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:41:30,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:41:30,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:41:30,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:41:30,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:30,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:41:30,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:41:30,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:41:30,735 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:41:30,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:30,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:41:30,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:41:30,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:41:30,737 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbf26404e70c3394fd0367244976693545d30c1a748b5c7360fa4057d4decd8b [2021-11-07 01:41:31,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:41:31,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:41:31,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:41:31,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:41:31,231 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:41:31,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 01:41:31,331 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/89526a6fa/5782feef243b40dcbb51613200a77402/FLAG545c87fe8 [2021-11-07 01:41:32,614 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:41:32,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 01:41:32,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/89526a6fa/5782feef243b40dcbb51613200a77402/FLAG545c87fe8 [2021-11-07 01:41:33,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/data/89526a6fa/5782feef243b40dcbb51613200a77402 [2021-11-07 01:41:33,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:41:33,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:41:33,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:33,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:41:33,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:41:33,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:33" (1/1) ... [2021-11-07 01:41:33,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403fdb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:33, skipping insertion in model container [2021-11-07 01:41:33,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:33" (1/1) ... [2021-11-07 01:41:33,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:41:33,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:37,915 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_555c4c62-a693-4ba5-933a-e882b97be9ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i[393184,393197] [2021-11-07 01:41:37,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:38,130 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:41:38,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:38,806 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_555c4c62-a693-4ba5-933a-e882b97be9ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i[393184,393197] [2021-11-07 01:41:38,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:38,900 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:41:39,704 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_555c4c62-a693-4ba5-933a-e882b97be9ed/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i[393184,393197] [2021-11-07 01:41:39,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:40,274 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:41:40,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40 WrapperNode [2021-11-07 01:41:40,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:40,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:40,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:41:40,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:41:40,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:40,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:41,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:41,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:41:41,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:41:41,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:41:41,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:41,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:41,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:41,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:42,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:43,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:43,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:43,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:41:43,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:41:43,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:41:43,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:41:43,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (1/1) ... [2021-11-07 01:41:43,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:43,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:43,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:41:43,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:41:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure __team_change_mode [2021-11-07 01:41:43,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_change_mode [2021-11-07 01:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure team_init [2021-11-07 01:41:43,472 INFO L138 BoogieDeclarations]: Found implementation of procedure team_init [2021-11-07 01:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure team_del_slave [2021-11-07 01:41:43,472 INFO L138 BoogieDeclarations]: Found implementation of procedure team_del_slave [2021-11-07 01:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_set [2021-11-07 01:41:43,473 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_set [2021-11-07 01:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_add [2021-11-07 01:41:43,473 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_add [2021-11-07 01:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure team_add_slave [2021-11-07 01:41:43,473 INFO L138 BoogieDeclarations]: Found implementation of procedure team_add_slave [2021-11-07 01:41:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:41:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:41:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:41:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:41:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure team_mode_option_set [2021-11-07 01:41:43,474 INFO L138 BoogieDeclarations]: Found implementation of procedure team_mode_option_set [2021-11-07 01:41:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure team_change_mode [2021-11-07 01:41:43,475 INFO L138 BoogieDeclarations]: Found implementation of procedure team_change_mode [2021-11-07 01:41:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:41:43,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:41:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:41:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:41:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:41:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:41:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:41:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:41:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:41:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:41:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_set [2021-11-07 01:41:43,477 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_set [2021-11-07 01:41:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_del [2021-11-07 01:41:43,477 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_del [2021-11-07 01:41:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:41:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:41:43,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:41:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:41:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_register [2021-11-07 01:41:43,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_register [2021-11-07 01:41:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-07 01:41:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:41:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:41:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_change_check [2021-11-07 01:41:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_change_check [2021-11-07 01:41:43,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:41:43,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:41:43,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:41:43,480 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_register [2021-11-07 01:41:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_register [2021-11-07 01:41:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_option [2021-11-07 01:41:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_option [2021-11-07 01:41:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 01:41:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:41:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:41:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_get [2021-11-07 01:41:43,483 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_get [2021-11-07 01:41:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:41:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:41:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:41:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:41:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:41:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_fill_one_option_get [2021-11-07 01:41:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_fill_one_option_get [2021-11-07 01:41:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:41:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:41:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:41:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_get [2021-11-07 01:41:43,486 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_get [2021-11-07 01:41:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:41:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:41:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:41:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_options_get [2021-11-07 01:41:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_options_get [2021-11-07 01:41:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_port [2021-11-07 01:41:43,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_port [2021-11-07 01:41:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_change_check [2021-11-07 01:41:43,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_change_check [2021-11-07 01:41:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_enter [2021-11-07 01:41:43,488 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_enter [2021-11-07 01:41:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_event_options_get [2021-11-07 01:41:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_event_options_get [2021-11-07 01:41:43,489 INFO L130 BoogieDeclarations]: Found specification of procedure team_uninit [2021-11-07 01:41:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure team_uninit [2021-11-07 01:41:43,489 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add [2021-11-07 01:41:43,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add [2021-11-07 01:44:48,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:44:48,274 INFO L299 CfgBuilder]: Removed 5858 assume(true) statements. [2021-11-07 01:44:48,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:48 BoogieIcfgContainer [2021-11-07 01:44:48,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:44:48,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:44:48,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:44:48,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:44:48,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:33" (1/3) ... [2021-11-07 01:44:48,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377da4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:48, skipping insertion in model container [2021-11-07 01:44:48,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:40" (2/3) ... [2021-11-07 01:44:48,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377da4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:48, skipping insertion in model container [2021-11-07 01:44:48,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:48" (3/3) ... [2021-11-07 01:44:48,290 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-07 01:44:48,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:44:48,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 01:44:48,380 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:44:48,385 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:44:48,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:44:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 6573 states, 6495 states have (on average 1.4734411085450347) internal successors, (9570), 6501 states have internal predecessors, (9570), 47 states have call successors, (47), 27 states have call predecessors, (47), 27 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-07 01:44:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 01:44:48,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:48,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:44:48,527 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:44:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:44:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 553429760, now seen corresponding path program 1 times [2021-11-07 01:44:48,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:44:48,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613384803] [2021-11-07 01:44:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:48,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:44:48,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:44:48,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:44:48,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:44:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:44:53,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:44:53,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:44:54,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:44:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:44:55,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:44:55,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613384803] [2021-11-07 01:44:55,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613384803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:44:55,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:44:55,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:44:55,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806638122] [2021-11-07 01:44:55,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:44:55,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:44:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:44:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:44:55,273 INFO L87 Difference]: Start difference. First operand has 6573 states, 6495 states have (on average 1.4734411085450347) internal successors, (9570), 6501 states have internal predecessors, (9570), 47 states have call successors, (47), 27 states have call predecessors, (47), 27 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:44:55,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:44:55,679 INFO L93 Difference]: Finished difference Result 13142 states and 19370 transitions. [2021-11-07 01:44:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:44:55,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 171 [2021-11-07 01:44:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:44:55,743 INFO L225 Difference]: With dead ends: 13142 [2021-11-07 01:44:55,743 INFO L226 Difference]: Without dead ends: 6554 [2021-11-07 01:44:55,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:44:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6554 states. [2021-11-07 01:44:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6554 to 6554. [2021-11-07 01:44:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 6477 states have (on average 1.4583912305079512) internal successors, (9446), 6482 states have internal predecessors, (9446), 47 states have call successors, (47), 27 states have call predecessors, (47), 27 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-07 01:44:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 9540 transitions. [2021-11-07 01:44:56,381 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 9540 transitions. Word has length 171 [2021-11-07 01:44:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:44:56,382 INFO L470 AbstractCegarLoop]: Abstraction has 6554 states and 9540 transitions. [2021-11-07 01:44:56,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:44:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 9540 transitions. [2021-11-07 01:44:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 01:44:56,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:56,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:44:56,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:44:56,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:44:56,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:44:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:44:56,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2110300698, now seen corresponding path program 1 times [2021-11-07 01:44:56,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:44:56,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572408830] [2021-11-07 01:44:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:56,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:44:56,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:44:56,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:44:56,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:45:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:01,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:45:01,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:01,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:02,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:02,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572408830] [2021-11-07 01:45:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572408830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:02,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:02,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:45:02,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682209236] [2021-11-07 01:45:02,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:45:02,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:02,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:45:02,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:45:02,652 INFO L87 Difference]: Start difference. First operand 6554 states and 9540 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:03,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:03,906 INFO L93 Difference]: Finished difference Result 13041 states and 19037 transitions. [2021-11-07 01:45:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:45:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 171 [2021-11-07 01:45:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:03,957 INFO L225 Difference]: With dead ends: 13041 [2021-11-07 01:45:03,957 INFO L226 Difference]: Without dead ends: 6579 [2021-11-07 01:45:03,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:45:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2021-11-07 01:45:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 6579. [2021-11-07 01:45:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6579 states, 6502 states have (on average 1.456628729621655) internal successors, (9471), 6507 states have internal predecessors, (9471), 47 states have call successors, (47), 27 states have call predecessors, (47), 27 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-07 01:45:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6579 states to 6579 states and 9565 transitions. [2021-11-07 01:45:04,213 INFO L78 Accepts]: Start accepts. Automaton has 6579 states and 9565 transitions. Word has length 171 [2021-11-07 01:45:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:04,214 INFO L470 AbstractCegarLoop]: Abstraction has 6579 states and 9565 transitions. [2021-11-07 01:45:04,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6579 states and 9565 transitions. [2021-11-07 01:45:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-07 01:45:04,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:04,219 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:04,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:04,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:04,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1843310508, now seen corresponding path program 1 times [2021-11-07 01:45:04,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:04,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251302889] [2021-11-07 01:45:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:04,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:04,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:04,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:04,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:45:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:09,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:45:09,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:45:10,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:45:11,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:11,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251302889] [2021-11-07 01:45:11,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251302889] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:11,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [643859122] [2021-11-07 01:45:11,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:11,433 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:11,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:45:11,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:45:11,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:45:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:14,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:45:14,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:45:16,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:45:18,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [643859122] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:18,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:45:18,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:45:18,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408037071] [2021-11-07 01:45:18,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:45:18,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:18,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:45:18,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:45:18,276 INFO L87 Difference]: Start difference. First operand 6579 states and 9565 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:19,001 INFO L93 Difference]: Finished difference Result 19371 states and 28382 transitions. [2021-11-07 01:45:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:45:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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 196 [2021-11-07 01:45:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:19,138 INFO L225 Difference]: With dead ends: 19371 [2021-11-07 01:45:19,138 INFO L226 Difference]: Without dead ends: 12967 [2021-11-07 01:45:19,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:45:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12967 states. [2021-11-07 01:45:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12967 to 12963. [2021-11-07 01:45:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12963 states, 12812 states have (on average 1.4615204495785201) internal successors, (18725), 12820 states have internal predecessors, (18725), 94 states have call successors, (94), 54 states have call predecessors, (94), 54 states have return successors, (141), 92 states have call predecessors, (141), 94 states have call successors, (141) [2021-11-07 01:45:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12963 states to 12963 states and 18960 transitions. [2021-11-07 01:45:19,648 INFO L78 Accepts]: Start accepts. Automaton has 12963 states and 18960 transitions. Word has length 196 [2021-11-07 01:45:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:19,652 INFO L470 AbstractCegarLoop]: Abstraction has 12963 states and 18960 transitions. [2021-11-07 01:45:19,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12963 states and 18960 transitions. [2021-11-07 01:45:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-07 01:45:19,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:19,664 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:19,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:19,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:20,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:20,089 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:20,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1532431701, now seen corresponding path program 1 times [2021-11-07 01:45:20,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:20,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953110840] [2021-11-07 01:45:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:20,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:20,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:20,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:20,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:45:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:25,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:45:25,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:45:27,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:45:28,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:28,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953110840] [2021-11-07 01:45:28,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953110840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:28,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [155204758] [2021-11-07 01:45:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:28,248 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:45:28,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:45:28,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:45:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:31,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:45:31,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:45:32,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:45:32,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [155204758] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:32,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:45:32,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:45:32,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869610164] [2021-11-07 01:45:32,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:45:32,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:45:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:45:32,852 INFO L87 Difference]: Start difference. First operand 12963 states and 18960 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:35,033 INFO L93 Difference]: Finished difference Result 35431 states and 51612 transitions. [2021-11-07 01:45:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:45:35,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2021-11-07 01:45:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:35,136 INFO L225 Difference]: With dead ends: 35431 [2021-11-07 01:45:35,136 INFO L226 Difference]: Without dead ends: 22649 [2021-11-07 01:45:35,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 901 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:45:35,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22649 states. [2021-11-07 01:45:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22649 to 22599. [2021-11-07 01:45:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22599 states, 22316 states have (on average 1.4507528230865747) internal successors, (32375), 22330 states have internal predecessors, (32375), 172 states have call successors, (172), 108 states have call predecessors, (172), 108 states have return successors, (258), 168 states have call predecessors, (258), 172 states have call successors, (258) [2021-11-07 01:45:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22599 states to 22599 states and 32805 transitions. [2021-11-07 01:45:35,957 INFO L78 Accepts]: Start accepts. Automaton has 22599 states and 32805 transitions. Word has length 228 [2021-11-07 01:45:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:35,958 INFO L470 AbstractCegarLoop]: Abstraction has 22599 states and 32805 transitions. [2021-11-07 01:45:35,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 22599 states and 32805 transitions. [2021-11-07 01:45:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-07 01:45:35,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:35,975 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:36,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:36,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:36,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:36,389 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1742482399, now seen corresponding path program 1 times [2021-11-07 01:45:36,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:36,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511956971] [2021-11-07 01:45:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:36,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:36,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:36,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:36,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:45:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:42,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 3109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:45:42,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:45:43,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:45:44,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:44,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511956971] [2021-11-07 01:45:44,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511956971] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:45:44,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [967111476] [2021-11-07 01:45:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:44,605 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:44,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:45:44,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:45:44,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:45:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:48,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 3109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:45:48,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:45:49,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:45:50,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [967111476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:50,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:45:50,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:45:50,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247041495] [2021-11-07 01:45:50,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:45:50,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:45:50,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:45:50,068 INFO L87 Difference]: Start difference. First operand 22599 states and 32805 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:56,399 INFO L93 Difference]: Finished difference Result 67398 states and 97969 transitions. [2021-11-07 01:45:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:45:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2021-11-07 01:45:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:56,607 INFO L225 Difference]: With dead ends: 67398 [2021-11-07 01:45:56,609 INFO L226 Difference]: Without dead ends: 44962 [2021-11-07 01:45:56,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:45:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44962 states. [2021-11-07 01:45:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44962 to 22592. [2021-11-07 01:45:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22592 states, 22309 states have (on average 1.4507149580886638) internal successors, (32364), 22323 states have internal predecessors, (32364), 172 states have call successors, (172), 108 states have call predecessors, (172), 108 states have return successors, (258), 168 states have call predecessors, (258), 172 states have call successors, (258) [2021-11-07 01:45:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22592 states to 22592 states and 32794 transitions. [2021-11-07 01:45:57,864 INFO L78 Accepts]: Start accepts. Automaton has 22592 states and 32794 transitions. Word has length 267 [2021-11-07 01:45:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:57,864 INFO L470 AbstractCegarLoop]: Abstraction has 22592 states and 32794 transitions. [2021-11-07 01:45:57,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:45:57,865 INFO L276 IsEmpty]: Start isEmpty. Operand 22592 states and 32794 transitions. [2021-11-07 01:45:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-07 01:45:57,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:57,881 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:45:57,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:58,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-07 01:45:58,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:58,282 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -425806168, now seen corresponding path program 1 times [2021-11-07 01:45:58,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:58,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101052357] [2021-11-07 01:45:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:58,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:58,290 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:58,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:46:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:04,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:46:04,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:46:05,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:46:07,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:07,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101052357] [2021-11-07 01:46:07,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101052357] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:07,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [461362105] [2021-11-07 01:46:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:07,239 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:07,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:07,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:07,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:46:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:11,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:46:11,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:46:12,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:46:13,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [461362105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:13,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:46:13,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:46:13,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583771646] [2021-11-07 01:46:13,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:46:13,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:46:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:46:13,232 INFO L87 Difference]: Start difference. First operand 22592 states and 32794 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:20,763 INFO L93 Difference]: Finished difference Result 64769 states and 93952 transitions. [2021-11-07 01:46:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:46:20,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-11-07 01:46:20,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:20,926 INFO L225 Difference]: With dead ends: 64769 [2021-11-07 01:46:20,926 INFO L226 Difference]: Without dead ends: 42358 [2021-11-07 01:46:20,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1064 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:46:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42358 states. [2021-11-07 01:46:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42358 to 42248. [2021-11-07 01:46:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42248 states, 41701 states have (on average 1.4447135560298314) internal successors, (60246), 41727 states have internal predecessors, (60246), 328 states have call successors, (328), 216 states have call predecessors, (328), 216 states have return successors, (492), 320 states have call predecessors, (492), 328 states have call successors, (492) [2021-11-07 01:46:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42248 states to 42248 states and 61066 transitions. [2021-11-07 01:46:22,716 INFO L78 Accepts]: Start accepts. Automaton has 42248 states and 61066 transitions. Word has length 269 [2021-11-07 01:46:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:22,719 INFO L470 AbstractCegarLoop]: Abstraction has 42248 states and 61066 transitions. [2021-11-07 01:46:22,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 42248 states and 61066 transitions. [2021-11-07 01:46:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-07 01:46:22,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:22,756 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:22,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:23,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:23,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:23,185 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2094814242, now seen corresponding path program 1 times [2021-11-07 01:46:23,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:23,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177373063] [2021-11-07 01:46:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:23,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:23,194 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:23,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:46:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:30,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:46:30,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:46:31,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:46:33,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:33,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177373063] [2021-11-07 01:46:33,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177373063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:46:33,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [370561588] [2021-11-07 01:46:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:33,142 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:33,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:46:33,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:46:33,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:46:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:37,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:46:37,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:46:38,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:46:39,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [370561588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:39,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:46:39,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-07 01:46:39,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738359241] [2021-11-07 01:46:39,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:46:39,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:46:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:46:39,972 INFO L87 Difference]: Start difference. First operand 42248 states and 61066 transitions. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 6 states have internal predecessors, (295), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:46:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:47,281 INFO L93 Difference]: Finished difference Result 105845 states and 152918 transitions. [2021-11-07 01:46:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:46:47,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 6 states have internal predecessors, (295), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 300 [2021-11-07 01:46:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:47,639 INFO L225 Difference]: With dead ends: 105845 [2021-11-07 01:46:47,639 INFO L226 Difference]: Without dead ends: 63778 [2021-11-07 01:46:47,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1184 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:46:47,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63778 states. [2021-11-07 01:46:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63778 to 42262. [2021-11-07 01:46:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42262 states, 41710 states have (on average 1.4446175976983937) internal successors, (60255), 41739 states have internal predecessors, (60255), 328 states have call successors, (328), 216 states have call predecessors, (328), 221 states have return successors, (499), 322 states have call predecessors, (499), 328 states have call successors, (499) [2021-11-07 01:46:50,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42262 states to 42262 states and 61082 transitions. [2021-11-07 01:46:50,144 INFO L78 Accepts]: Start accepts. Automaton has 42262 states and 61082 transitions. Word has length 300 [2021-11-07 01:46:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:50,147 INFO L470 AbstractCegarLoop]: Abstraction has 42262 states and 61082 transitions. [2021-11-07 01:46:50,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 6 states have internal predecessors, (295), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:46:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 42262 states and 61082 transitions. [2021-11-07 01:46:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-07 01:46:50,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:50,184 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:50,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:50,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:50,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:46:50,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1597859276, now seen corresponding path program 1 times [2021-11-07 01:46:50,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:50,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612807668] [2021-11-07 01:46:50,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:50,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:50,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:50,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:50,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:46:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:46:57,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:46:58,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:47:00,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:00,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612807668] [2021-11-07 01:47:00,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612807668] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:00,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936366718] [2021-11-07 01:47:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:00,463 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:00,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:47:00,464 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:47:00,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:47:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:05,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:47:05,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:47:06,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:47:07,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936366718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:07,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:47:07,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:47:07,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039117132] [2021-11-07 01:47:07,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:47:07,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:47:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:47:07,211 INFO L87 Difference]: Start difference. First operand 42262 states and 61082 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:47:08,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:08,934 INFO L93 Difference]: Finished difference Result 84839 states and 123147 transitions. [2021-11-07 01:47:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:47:08,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 307 [2021-11-07 01:47:08,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:09,096 INFO L225 Difference]: With dead ends: 84839 [2021-11-07 01:47:09,097 INFO L226 Difference]: Without dead ends: 42758 [2021-11-07 01:47:09,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:47:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42758 states. [2021-11-07 01:47:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42758 to 42278. [2021-11-07 01:47:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42278 states, 41726 states have (on average 1.4444471073191776) internal successors, (60271), 41755 states have internal predecessors, (60271), 328 states have call successors, (328), 216 states have call predecessors, (328), 221 states have return successors, (499), 322 states have call predecessors, (499), 328 states have call successors, (499) [2021-11-07 01:47:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42278 states to 42278 states and 61098 transitions. [2021-11-07 01:47:11,137 INFO L78 Accepts]: Start accepts. Automaton has 42278 states and 61098 transitions. Word has length 307 [2021-11-07 01:47:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:11,138 INFO L470 AbstractCegarLoop]: Abstraction has 42278 states and 61098 transitions. [2021-11-07 01:47:11,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:47:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 42278 states and 61098 transitions. [2021-11-07 01:47:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-07 01:47:11,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:11,174 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:11,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:11,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:11,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:11,589 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:47:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1583117906, now seen corresponding path program 1 times [2021-11-07 01:47:11,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:11,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743399209] [2021-11-07 01:47:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:11,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:11,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:11,594 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:11,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:47:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:18,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 3328 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:47:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:47:20,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:47:22,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:22,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743399209] [2021-11-07 01:47:22,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743399209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:22,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222644700] [2021-11-07 01:47:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:22,047 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:22,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:47:22,048 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:47:22,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:47:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:27,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 3328 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:47:27,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:47:28,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:47:29,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222644700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:29,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:47:29,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-07 01:47:29,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443384872] [2021-11-07 01:47:29,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:47:29,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:47:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:47:29,925 INFO L87 Difference]: Start difference. First operand 42278 states and 61098 transitions. Second operand has 12 states, 12 states have (on average 25.916666666666668) internal successors, (311), 10 states have internal predecessors, (311), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:47:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:42,642 INFO L93 Difference]: Finished difference Result 105987 states and 153829 transitions. [2021-11-07 01:47:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 01:47:42,644 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 25.916666666666668) internal successors, (311), 10 states have internal predecessors, (311), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 312 [2021-11-07 01:47:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:43,048 INFO L225 Difference]: With dead ends: 105987 [2021-11-07 01:47:43,048 INFO L226 Difference]: Without dead ends: 63890 [2021-11-07 01:47:43,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1263 GetRequests, 1228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=208, Invalid=1124, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 01:47:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63890 states. [2021-11-07 01:47:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63890 to 42288. [2021-11-07 01:47:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42288 states, 41735 states have (on average 1.4441595782916017) internal successors, (60272), 41765 states have internal predecessors, (60272), 328 states have call successors, (328), 216 states have call predecessors, (328), 222 states have return successors, (503), 322 states have call predecessors, (503), 328 states have call successors, (503) [2021-11-07 01:47:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42288 states to 42288 states and 61103 transitions. [2021-11-07 01:47:44,831 INFO L78 Accepts]: Start accepts. Automaton has 42288 states and 61103 transitions. Word has length 312 [2021-11-07 01:47:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:44,832 INFO L470 AbstractCegarLoop]: Abstraction has 42288 states and 61103 transitions. [2021-11-07 01:47:44,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.916666666666668) internal successors, (311), 10 states have internal predecessors, (311), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:47:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 42288 states and 61103 transitions. [2021-11-07 01:47:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-07 01:47:44,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:44,860 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:44,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:45,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-07 01:47:45,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:45,285 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:47:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:45,286 INFO L85 PathProgramCache]: Analyzing trace with hash -939166615, now seen corresponding path program 1 times [2021-11-07 01:47:45,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:45,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591043909] [2021-11-07 01:47:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:45,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:45,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:45,290 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:45,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:47:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:52,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 3519 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:47:52,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:47:54,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:47:56,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:56,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591043909] [2021-11-07 01:47:56,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591043909] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:47:56,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1961414030] [2021-11-07 01:47:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:56,461 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:56,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:47:56,467 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:47:56,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:48:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:02,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 3519 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:48:02,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:48:02,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:48:03,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1961414030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:03,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:48:03,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:48:03,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248325337] [2021-11-07 01:48:03,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:48:03,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:48:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:03,684 INFO L87 Difference]: Start difference. First operand 42288 states and 61103 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:04,957 INFO L93 Difference]: Finished difference Result 84059 states and 121854 transitions. [2021-11-07 01:48:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 321 [2021-11-07 01:48:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:05,077 INFO L225 Difference]: With dead ends: 84059 [2021-11-07 01:48:05,077 INFO L226 Difference]: Without dead ends: 41952 [2021-11-07 01:48:05,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1280 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41952 states. [2021-11-07 01:48:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41952 to 41952. [2021-11-07 01:48:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41952 states, 41399 states have (on average 1.4396483006835914) internal successors, (59600), 41429 states have internal predecessors, (59600), 328 states have call successors, (328), 216 states have call predecessors, (328), 222 states have return successors, (503), 322 states have call predecessors, (503), 328 states have call successors, (503) [2021-11-07 01:48:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41952 states to 41952 states and 60431 transitions. [2021-11-07 01:48:06,909 INFO L78 Accepts]: Start accepts. Automaton has 41952 states and 60431 transitions. Word has length 321 [2021-11-07 01:48:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:06,910 INFO L470 AbstractCegarLoop]: Abstraction has 41952 states and 60431 transitions. [2021-11-07 01:48:06,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 41952 states and 60431 transitions. [2021-11-07 01:48:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-07 01:48:06,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:06,928 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:07,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:07,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-07 01:48:07,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:07,333 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:48:07,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:07,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1447733280, now seen corresponding path program 1 times [2021-11-07 01:48:07,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:07,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917495422] [2021-11-07 01:48:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:07,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:07,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:07,339 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:07,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:48:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:14,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:48:14,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:48:16,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:48:18,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:18,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917495422] [2021-11-07 01:48:18,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917495422] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:48:18,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468079086] [2021-11-07 01:48:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:18,370 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:18,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:48:18,373 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:48:18,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:48:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:24,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:48:24,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:48:25,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:48:26,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1468079086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:26,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:48:26,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:48:26,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188959595] [2021-11-07 01:48:26,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:48:26,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:48:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:26,377 INFO L87 Difference]: Start difference. First operand 41952 states and 60431 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:27,948 INFO L93 Difference]: Finished difference Result 83699 states and 121126 transitions. [2021-11-07 01:48:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 323 [2021-11-07 01:48:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:28,070 INFO L225 Difference]: With dead ends: 83699 [2021-11-07 01:48:28,071 INFO L226 Difference]: Without dead ends: 41928 [2021-11-07 01:48:28,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1281 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41928 states. [2021-11-07 01:48:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41928 to 41928. [2021-11-07 01:48:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41928 states, 41375 states have (on average 1.4395166163141995) internal successors, (59560), 41405 states have internal predecessors, (59560), 328 states have call successors, (328), 216 states have call predecessors, (328), 222 states have return successors, (503), 322 states have call predecessors, (503), 328 states have call successors, (503) [2021-11-07 01:48:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41928 states to 41928 states and 60391 transitions. [2021-11-07 01:48:29,720 INFO L78 Accepts]: Start accepts. Automaton has 41928 states and 60391 transitions. Word has length 323 [2021-11-07 01:48:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:29,721 INFO L470 AbstractCegarLoop]: Abstraction has 41928 states and 60391 transitions. [2021-11-07 01:48:29,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 41928 states and 60391 transitions. [2021-11-07 01:48:29,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-07 01:48:29,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:29,736 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:29,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:29,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 01:48:30,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:30,137 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:48:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -35437226, now seen corresponding path program 1 times [2021-11-07 01:48:30,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:30,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911502504] [2021-11-07 01:48:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:30,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:30,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:30,144 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:30,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:48:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:38,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:48:38,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:48:40,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:48:42,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:42,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911502504] [2021-11-07 01:48:42,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911502504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:48:42,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [826218462] [2021-11-07 01:48:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:42,427 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:42,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:48:42,428 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:48:42,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:48:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:48,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:48:48,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:48:49,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:48:50,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [826218462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:50,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:48:50,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:48:50,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472339989] [2021-11-07 01:48:50,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:48:50,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:48:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:50,634 INFO L87 Difference]: Start difference. First operand 41928 states and 60391 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:52,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:52,116 INFO L93 Difference]: Finished difference Result 83635 states and 120990 transitions. [2021-11-07 01:48:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:52,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 323 [2021-11-07 01:48:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:52,249 INFO L225 Difference]: With dead ends: 83635 [2021-11-07 01:48:52,250 INFO L226 Difference]: Without dead ends: 41888 [2021-11-07 01:48:52,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1281 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41888 states. [2021-11-07 01:48:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41888 to 41880. [2021-11-07 01:48:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41880 states, 41327 states have (on average 1.438284898492511) internal successors, (59440), 41357 states have internal predecessors, (59440), 328 states have call successors, (328), 216 states have call predecessors, (328), 222 states have return successors, (503), 322 states have call predecessors, (503), 328 states have call successors, (503) [2021-11-07 01:48:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41880 states to 41880 states and 60271 transitions. [2021-11-07 01:48:53,812 INFO L78 Accepts]: Start accepts. Automaton has 41880 states and 60271 transitions. Word has length 323 [2021-11-07 01:48:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:53,813 INFO L470 AbstractCegarLoop]: Abstraction has 41880 states and 60271 transitions. [2021-11-07 01:48:53,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:48:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 41880 states and 60271 transitions. [2021-11-07 01:48:53,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-07 01:48:53,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:53,828 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:53,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-07 01:48:54,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:54,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:54,237 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:48:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash -547105690, now seen corresponding path program 1 times [2021-11-07 01:48:54,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:54,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548817070] [2021-11-07 01:48:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:54,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:54,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:54,242 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:54,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:49:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:02,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 3527 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:49:02,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:49:04,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:49:06,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:06,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548817070] [2021-11-07 01:49:06,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548817070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:49:06,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2107075443] [2021-11-07 01:49:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:06,600 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:49:06,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:49:06,601 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:49:06,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:49:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:13,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 3527 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:49:13,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:49:14,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:49:14,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2107075443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:14,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:49:14,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:49:14,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348248591] [2021-11-07 01:49:14,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:49:14,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:49:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:49:14,532 INFO L87 Difference]: Start difference. First operand 41880 states and 60271 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:49:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:15,832 INFO L93 Difference]: Finished difference Result 83694 states and 121016 transitions. [2021-11-07 01:49:15,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:49:15,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 325 [2021-11-07 01:49:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:15,963 INFO L225 Difference]: With dead ends: 83694 [2021-11-07 01:49:15,963 INFO L226 Difference]: Without dead ends: 41995 [2021-11-07 01:49:16,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:49:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41995 states. [2021-11-07 01:49:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41995 to 41888. [2021-11-07 01:49:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41888 states, 41335 states have (on average 1.4382000725777186) internal successors, (59448), 41365 states have internal predecessors, (59448), 328 states have call successors, (328), 216 states have call predecessors, (328), 222 states have return successors, (503), 322 states have call predecessors, (503), 328 states have call successors, (503) [2021-11-07 01:49:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41888 states to 41888 states and 60279 transitions. [2021-11-07 01:49:17,620 INFO L78 Accepts]: Start accepts. Automaton has 41888 states and 60279 transitions. Word has length 325 [2021-11-07 01:49:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:17,621 INFO L470 AbstractCegarLoop]: Abstraction has 41888 states and 60279 transitions. [2021-11-07 01:49:17,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 01:49:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 41888 states and 60279 transitions. [2021-11-07 01:49:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-07 01:49:17,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:17,644 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:17,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-07 01:49:17,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:18,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:18,073 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:49:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1236413896, now seen corresponding path program 1 times [2021-11-07 01:49:18,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:18,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644785019] [2021-11-07 01:49:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:18,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:18,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:18,081 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:18,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 01:49:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:27,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:49:27,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:49:28,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:49:30,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:30,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644785019] [2021-11-07 01:49:30,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644785019] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:49:30,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [758790474] [2021-11-07 01:49:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:30,725 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:49:30,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:49:30,726 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:49:30,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 01:49:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:37,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:49:37,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:49:38,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:49:39,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [758790474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:39,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:49:39,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:49:39,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092375762] [2021-11-07 01:49:39,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:49:39,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:39,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:49:39,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:49:39,144 INFO L87 Difference]: Start difference. First operand 41888 states and 60279 transitions. Second operand has 5 states, 5 states have (on average 63.2) internal successors, (316), 4 states have internal predecessors, (316), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:49:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:40,383 INFO L93 Difference]: Finished difference Result 83643 states and 120930 transitions. [2021-11-07 01:49:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:49:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 4 states have internal predecessors, (316), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 329 [2021-11-07 01:49:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:40,618 INFO L225 Difference]: With dead ends: 83643 [2021-11-07 01:49:40,618 INFO L226 Difference]: Without dead ends: 41936 [2021-11-07 01:49:40,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1312 GetRequests, 1303 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:49:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41936 states. [2021-11-07 01:49:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41936 to 41920. [2021-11-07 01:49:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41920 states, 41359 states have (on average 1.4379457917261056) internal successors, (59472), 41389 states have internal predecessors, (59472), 328 states have call successors, (328), 216 states have call predecessors, (328), 230 states have return successors, (527), 330 states have call predecessors, (527), 328 states have call successors, (527) [2021-11-07 01:49:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41920 states to 41920 states and 60327 transitions. [2021-11-07 01:49:41,993 INFO L78 Accepts]: Start accepts. Automaton has 41920 states and 60327 transitions. Word has length 329 [2021-11-07 01:49:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:41,993 INFO L470 AbstractCegarLoop]: Abstraction has 41920 states and 60327 transitions. [2021-11-07 01:49:41,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 4 states have internal predecessors, (316), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:49:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 41920 states and 60327 transitions. [2021-11-07 01:49:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-07 01:49:42,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:42,008 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:42,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-11-07 01:49:42,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:42,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:42,419 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:49:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1955609995, now seen corresponding path program 1 times [2021-11-07 01:49:42,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:42,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853406915] [2021-11-07 01:49:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:42,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:42,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:42,424 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:42,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 01:49:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:51,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:49:51,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:49:52,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:49:54,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:54,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853406915] [2021-11-07 01:49:54,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853406915] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:49:54,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [663532320] [2021-11-07 01:49:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:54,542 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:49:54,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:49:54,543 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:49:54,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-07 01:50:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:02,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:50:02,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:50:03,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:50:05,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [663532320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:05,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:50:05,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-07 01:50:05,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717929510] [2021-11-07 01:50:05,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:50:05,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:50:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:50:05,321 INFO L87 Difference]: Start difference. First operand 41920 states and 60327 transitions. Second operand has 12 states, 12 states have (on average 27.083333333333332) internal successors, (325), 12 states have internal predecessors, (325), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:10,282 INFO L93 Difference]: Finished difference Result 92171 states and 132522 transitions. [2021-11-07 01:50:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:50:10,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.083333333333332) internal successors, (325), 12 states have internal predecessors, (325), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 331 [2021-11-07 01:50:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:10,460 INFO L225 Difference]: With dead ends: 92171 [2021-11-07 01:50:10,460 INFO L226 Difference]: Without dead ends: 50432 [2021-11-07 01:50:10,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1304 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:50:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50432 states. [2021-11-07 01:50:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50432 to 41968. [2021-11-07 01:50:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41968 states, 41403 states have (on average 1.4374803758181773) internal successors, (59516), 41437 states have internal predecessors, (59516), 328 states have call successors, (328), 216 states have call predecessors, (328), 234 states have return successors, (531), 330 states have call predecessors, (531), 328 states have call successors, (531) [2021-11-07 01:50:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41968 states to 41968 states and 60375 transitions. [2021-11-07 01:50:12,099 INFO L78 Accepts]: Start accepts. Automaton has 41968 states and 60375 transitions. Word has length 331 [2021-11-07 01:50:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:12,100 INFO L470 AbstractCegarLoop]: Abstraction has 41968 states and 60375 transitions. [2021-11-07 01:50:12,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.083333333333332) internal successors, (325), 12 states have internal predecessors, (325), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 41968 states and 60375 transitions. [2021-11-07 01:50:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-07 01:50:12,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:12,117 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:12,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-07 01:50:12,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-07 01:50:12,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:50:12,533 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:50:12,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:12,534 INFO L85 PathProgramCache]: Analyzing trace with hash -255815345, now seen corresponding path program 1 times [2021-11-07 01:50:12,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:12,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028073748] [2021-11-07 01:50:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:12,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:12,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:12,538 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:12,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-07 01:50:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:21,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 3588 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:50:21,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:50:23,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:50:25,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:25,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028073748] [2021-11-07 01:50:25,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028073748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:50:25,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1427904610] [2021-11-07 01:50:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:25,127 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:50:25,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:50:25,128 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:50:25,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-07 01:50:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:32,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 3588 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:50:32,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:50:34,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:50:35,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1427904610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:35,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:50:35,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5, 5] total 15 [2021-11-07 01:50:35,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416763432] [2021-11-07 01:50:35,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:50:35,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:50:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:50:35,956 INFO L87 Difference]: Start difference. First operand 41968 states and 60375 transitions. Second operand has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:37,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:37,880 INFO L93 Difference]: Finished difference Result 83819 states and 121150 transitions. [2021-11-07 01:50:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:50:37,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 333 [2021-11-07 01:50:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:38,000 INFO L225 Difference]: With dead ends: 83819 [2021-11-07 01:50:38,000 INFO L226 Difference]: Without dead ends: 42032 [2021-11-07 01:50:38,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1315 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:50:38,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42032 states. [2021-11-07 01:50:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42032 to 42000. [2021-11-07 01:50:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42000 states, 41435 states have (on average 1.4371425123687704) internal successors, (59548), 41469 states have internal predecessors, (59548), 328 states have call successors, (328), 216 states have call predecessors, (328), 234 states have return successors, (531), 330 states have call predecessors, (531), 328 states have call successors, (531) [2021-11-07 01:50:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42000 states to 42000 states and 60407 transitions. [2021-11-07 01:50:39,707 INFO L78 Accepts]: Start accepts. Automaton has 42000 states and 60407 transitions. Word has length 333 [2021-11-07 01:50:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:39,708 INFO L470 AbstractCegarLoop]: Abstraction has 42000 states and 60407 transitions. [2021-11-07 01:50:39,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 42000 states and 60407 transitions. [2021-11-07 01:50:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-07 01:50:39,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:39,726 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:39,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:40,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:40,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:40,127 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:50:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1001858054, now seen corresponding path program 1 times [2021-11-07 01:50:40,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:40,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677720050] [2021-11-07 01:50:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:40,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:40,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:40,131 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:40,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-07 01:50:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:49,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 3579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:50:49,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:50:51,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:50:52,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:52,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677720050] [2021-11-07 01:50:52,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677720050] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:50:52,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575813449] [2021-11-07 01:50:52,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:52,974 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:50:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:50:52,975 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:50:52,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-07 01:51:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:01,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 3579 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:01,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:51:01,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:51:02,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [575813449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:02,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:51:02,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:51:02,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226200147] [2021-11-07 01:51:02,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:02,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:02,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:51:02,552 INFO L87 Difference]: Start difference. First operand 42000 states and 60407 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:03,980 INFO L93 Difference]: Finished difference Result 83923 states and 121254 transitions. [2021-11-07 01:51:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2021-11-07 01:51:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:04,102 INFO L225 Difference]: With dead ends: 83923 [2021-11-07 01:51:04,102 INFO L226 Difference]: Without dead ends: 42104 [2021-11-07 01:51:04,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1332 GetRequests, 1324 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:51:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42104 states. [2021-11-07 01:51:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42104 to 42008. [2021-11-07 01:51:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42008 states, 41443 states have (on average 1.437058128031272) internal successors, (59556), 41477 states have internal predecessors, (59556), 328 states have call successors, (328), 216 states have call predecessors, (328), 234 states have return successors, (531), 330 states have call predecessors, (531), 328 states have call successors, (531) [2021-11-07 01:51:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42008 states to 42008 states and 60415 transitions. [2021-11-07 01:51:05,723 INFO L78 Accepts]: Start accepts. Automaton has 42008 states and 60415 transitions. Word has length 334 [2021-11-07 01:51:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:05,724 INFO L470 AbstractCegarLoop]: Abstraction has 42008 states and 60415 transitions. [2021-11-07 01:51:05,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 42008 states and 60415 transitions. [2021-11-07 01:51:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-07 01:51:05,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:05,736 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:05,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:05,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2021-11-07 01:51:06,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:06,137 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:51:06,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1819506504, now seen corresponding path program 1 times [2021-11-07 01:51:06,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:06,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889431029] [2021-11-07 01:51:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:06,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:06,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:06,142 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:06,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-07 01:51:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:15,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 3579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:51:15,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:51:17,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:51:19,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:19,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889431029] [2021-11-07 01:51:19,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889431029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:51:19,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1075776449] [2021-11-07 01:51:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:19,156 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:51:19,157 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:51:19,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-07 01:51:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:27,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 3579 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:51:27,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:51:29,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:51:30,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1075776449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:30,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:51:30,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 01:51:30,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074753166] [2021-11-07 01:51:30,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:51:30,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:51:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:51:30,247 INFO L87 Difference]: Start difference. First operand 42008 states and 60415 transitions. Second operand has 7 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:32,043 INFO L93 Difference]: Finished difference Result 84019 states and 121366 transitions. [2021-11-07 01:51:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:51:32,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2021-11-07 01:51:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:32,166 INFO L225 Difference]: With dead ends: 84019 [2021-11-07 01:51:32,166 INFO L226 Difference]: Without dead ends: 42192 [2021-11-07 01:51:32,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1321 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:51:32,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42192 states. [2021-11-07 01:51:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42192 to 42064. [2021-11-07 01:51:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42064 states, 41495 states have (on average 1.4365104229425232) internal successors, (59608), 41533 states have internal predecessors, (59608), 328 states have call successors, (328), 216 states have call predecessors, (328), 238 states have return successors, (535), 330 states have call predecessors, (535), 328 states have call successors, (535) [2021-11-07 01:51:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42064 states to 42064 states and 60471 transitions. [2021-11-07 01:51:33,879 INFO L78 Accepts]: Start accepts. Automaton has 42064 states and 60471 transitions. Word has length 334 [2021-11-07 01:51:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:33,879 INFO L470 AbstractCegarLoop]: Abstraction has 42064 states and 60471 transitions. [2021-11-07 01:51:33,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 42064 states and 60471 transitions. [2021-11-07 01:51:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-07 01:51:33,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:33,895 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:33,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:34,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:34,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:34,296 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:51:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 527740745, now seen corresponding path program 1 times [2021-11-07 01:51:34,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:34,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027028872] [2021-11-07 01:51:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:34,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:34,301 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:34,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-07 01:51:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:44,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3581 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:51:44,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:51:45,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:51:47,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:47,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027028872] [2021-11-07 01:51:47,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027028872] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:51:47,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1869143263] [2021-11-07 01:51:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:47,552 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:47,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:51:47,553 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:51:47,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-07 01:51:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:56,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 3581 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:56,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:51:57,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:51:57,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1869143263] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:57,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:51:57,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:51:57,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888242325] [2021-11-07 01:51:57,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:57,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:51:57,927 INFO L87 Difference]: Start difference. First operand 42064 states and 60471 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:59,396 INFO L93 Difference]: Finished difference Result 83971 states and 121310 transitions. [2021-11-07 01:51:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 336 [2021-11-07 01:51:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:59,532 INFO L225 Difference]: With dead ends: 83971 [2021-11-07 01:51:59,532 INFO L226 Difference]: Without dead ends: 42088 [2021-11-07 01:51:59,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1332 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:51:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42088 states. [2021-11-07 01:52:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42088 to 42088. [2021-11-07 01:52:01,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42088 states, 41519 states have (on average 1.4362580987017992) internal successors, (59632), 41557 states have internal predecessors, (59632), 328 states have call successors, (328), 216 states have call predecessors, (328), 238 states have return successors, (535), 330 states have call predecessors, (535), 328 states have call successors, (535) [2021-11-07 01:52:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42088 states to 42088 states and 60495 transitions. [2021-11-07 01:52:01,200 INFO L78 Accepts]: Start accepts. Automaton has 42088 states and 60495 transitions. Word has length 336 [2021-11-07 01:52:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:01,201 INFO L470 AbstractCegarLoop]: Abstraction has 42088 states and 60495 transitions. [2021-11-07 01:52:01,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand 42088 states and 60495 transitions. [2021-11-07 01:52:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-07 01:52:01,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:01,215 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:01,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:01,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-07 01:52:01,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:01,617 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:01,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:01,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1315364759, now seen corresponding path program 1 times [2021-11-07 01:52:01,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:01,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783449716] [2021-11-07 01:52:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:01,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:01,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:01,626 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:01,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-07 01:52:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:11,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:52:11,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:52:13,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:52:15,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:15,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783449716] [2021-11-07 01:52:15,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783449716] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:15,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1172357021] [2021-11-07 01:52:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:15,272 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:15,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:15,272 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:15,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-11-07 01:52:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:30,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:52:30,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:52:31,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:52:33,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1172357021] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:33,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765719135] [2021-11-07 01:52:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:33,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:33,056 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:33,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 01:52:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:41,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:41,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:52:42,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:52:43,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765719135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:43,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:52:43,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 11 [2021-11-07 01:52:43,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874456881] [2021-11-07 01:52:43,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:52:43,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:52:43,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:52:43,453 INFO L87 Difference]: Start difference. First operand 42088 states and 60495 transitions. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:45,053 INFO L93 Difference]: Finished difference Result 82693 states and 119280 transitions. [2021-11-07 01:52:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:45,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-11-07 01:52:45,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:45,217 INFO L225 Difference]: With dead ends: 82693 [2021-11-07 01:52:45,218 INFO L226 Difference]: Without dead ends: 40786 [2021-11-07 01:52:45,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2024 GetRequests, 2013 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:52:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40786 states. [2021-11-07 01:52:47,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40786 to 40704. [2021-11-07 01:52:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40704 states, 40202 states have (on average 1.436072832197403) internal successors, (57733), 40229 states have internal predecessors, (57733), 290 states have call successors, (290), 193 states have call predecessors, (290), 209 states have return successors, (440), 291 states have call predecessors, (440), 290 states have call successors, (440) [2021-11-07 01:52:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40704 states to 40704 states and 58463 transitions. [2021-11-07 01:52:47,504 INFO L78 Accepts]: Start accepts. Automaton has 40704 states and 58463 transitions. Word has length 338 [2021-11-07 01:52:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:47,505 INFO L470 AbstractCegarLoop]: Abstraction has 40704 states and 58463 transitions. [2021-11-07 01:52:47,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 40704 states and 58463 transitions. [2021-11-07 01:52:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-07 01:52:47,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:47,558 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:47,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:47,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:48,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:48,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:48,181 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION === [__team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, team_change_modeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash -716007517, now seen corresponding path program 1 times [2021-11-07 01:52:48,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:48,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553046626] [2021-11-07 01:52:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:48,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:48,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:48,190 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:48,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_555c4c62-a693-4ba5-933a-e882b97be9ed/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-07 01:52:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:59,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 3595 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:52:59,307 INFO L286 TraceCheckSpWp]: Computing forward predicates...