./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 32bit --witnessprinter.graph.data.programhash 54199c4744c1bc6f90b801fad85d1b6d237818e3b8e71cae069cfd39ac31a054 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:41,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:41,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:30:41,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:41,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:41,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:41,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:41,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:41,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:41,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:41,308 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:41,308 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:41,309 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:41,312 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:41,312 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:41,313 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:41,313 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:41,313 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:41,314 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:41,314 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:41,314 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:41,316 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:41,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:41,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:41,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:41,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:41,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:41,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:41,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:41,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:41,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:41,333 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:41,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:41,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:41,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:41,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:41,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:41,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:41,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:41,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:41,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:41,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:41,337 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:41,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:41,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:41,338 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:41,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:41,339 INFO L153 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54199c4744c1bc6f90b801fad85d1b6d237818e3b8e71cae069cfd39ac31a054 [2024-11-02 12:30:41,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:41,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:41,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:41,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:41,751 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:41,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c Unable to find full path for "g++" [2024-11-02 12:30:44,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:44,419 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:44,420 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2024-11-02 12:30:44,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/data/1801ce4e9/0143c71b6c5b45b1adba7a7a5222e7da/FLAG40bac0909 [2024-11-02 12:30:44,689 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/data/1801ce4e9/0143c71b6c5b45b1adba7a7a5222e7da [2024-11-02 12:30:44,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:44,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:44,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:44,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:44,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:44,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45867f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44, skipping insertion in model container [2024-11-02 12:30:44,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:45,265 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15593,15606] [2024-11-02 12:30:45,293 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16240,16253] [2024-11-02 12:30:45,313 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17624,17637] [2024-11-02 12:30:45,329 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18600,18613] [2024-11-02 12:30:45,436 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27965,27978] [2024-11-02 12:30:45,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:45,528 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:45,677 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15593,15606] [2024-11-02 12:30:45,690 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16240,16253] [2024-11-02 12:30:45,708 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17624,17637] [2024-11-02 12:30:45,723 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18600,18613] [2024-11-02 12:30:45,795 WARN L251 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_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27965,27978] [2024-11-02 12:30:45,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:45,897 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:45,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45 WrapperNode [2024-11-02 12:30:45,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:45,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:45,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:45,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:45,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:45,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,090 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1795 [2024-11-02 12:30:46,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:46,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:46,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:46,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:46,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:46,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:46,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:46,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:46,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (1/1) ... [2024-11-02 12:30:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:46,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:46,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:46,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7271d1-d84c-49ef-bf44-9f75b7c0665c/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:46,632 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:46,635 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:48,648 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:48,648 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:49,266 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:49,266 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:30:49,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:49 BoogieIcfgContainer [2024-11-02 12:30:49,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:49,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:49,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:49,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:49,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:44" (1/3) ... [2024-11-02 12:30:49,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be451ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:49, skipping insertion in model container [2024-11-02 12:30:49,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:45" (2/3) ... [2024-11-02 12:30:49,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be451ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:49, skipping insertion in model container [2024-11-02 12:30:49,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:49" (3/3) ... [2024-11-02 12:30:49,281 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2024-11-02 12:30:49,300 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:49,300 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-02 12:30:49,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:49,398 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e4b135f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:49,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-02 12:30:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 308 states have (on average 1.8084415584415585) internal successors, (557), 313 states have internal predecessors, (557), 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) [2024-11-02 12:30:49,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-02 12:30:49,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:49,421 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:49,422 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:49,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1087726764, now seen corresponding path program 1 times [2024-11-02 12:30:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210345772] [2024-11-02 12:30:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:49,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:52,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210345772] [2024-11-02 12:30:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210345772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:52,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171124542] [2024-11-02 12:30:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:52,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:52,080 INFO L87 Difference]: Start difference. First operand has 314 states, 308 states have (on average 1.8084415584415585) internal successors, (557), 313 states have internal predecessors, (557), 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) Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-02 12:30:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:52,369 INFO L93 Difference]: Finished difference Result 814 states and 1435 transitions. [2024-11-02 12:30:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2024-11-02 12:30:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:52,385 INFO L225 Difference]: With dead ends: 814 [2024-11-02 12:30:52,385 INFO L226 Difference]: Without dead ends: 569 [2024-11-02 12:30:52,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:52,393 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 1415 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:52,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1018 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:30:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-02 12:30:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 547. [2024-11-02 12:30:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 542 states have (on average 1.345018450184502) internal successors, (729), 546 states have internal predecessors, (729), 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) [2024-11-02 12:30:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 729 transitions. [2024-11-02 12:30:52,480 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 729 transitions. Word has length 119 [2024-11-02 12:30:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:52,481 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 729 transitions. [2024-11-02 12:30:52,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-02 12:30:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 729 transitions. [2024-11-02 12:30:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-02 12:30:52,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:52,487 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:52,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:30:52,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:52,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1480345697, now seen corresponding path program 1 times [2024-11-02 12:30:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:52,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621596011] [2024-11-02 12:30:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:52,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:52,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621596011] [2024-11-02 12:30:52,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621596011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:52,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:52,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374831122] [2024-11-02 12:30:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:52,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:52,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:52,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:52,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:52,689 INFO L87 Difference]: Start difference. First operand 547 states and 729 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-02 12:30:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:52,902 INFO L93 Difference]: Finished difference Result 1168 states and 1575 transitions. [2024-11-02 12:30:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:52,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2024-11-02 12:30:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:52,906 INFO L225 Difference]: With dead ends: 1168 [2024-11-02 12:30:52,907 INFO L226 Difference]: Without dead ends: 721 [2024-11-02 12:30:52,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:52,910 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 215 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:52,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 773 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:30:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-02 12:30:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 657. [2024-11-02 12:30:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 652 states have (on average 1.3895705521472392) internal successors, (906), 656 states have internal predecessors, (906), 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) [2024-11-02 12:30:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 906 transitions. [2024-11-02 12:30:52,943 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 906 transitions. Word has length 121 [2024-11-02 12:30:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:52,943 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 906 transitions. [2024-11-02 12:30:52,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-02 12:30:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 906 transitions. [2024-11-02 12:30:52,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-02 12:30:52,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:52,947 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:52,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:30:52,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:52,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash 45088496, now seen corresponding path program 1 times [2024-11-02 12:30:52,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:52,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799575356] [2024-11-02 12:30:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:52,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:53,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:53,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799575356] [2024-11-02 12:30:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799575356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:53,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:53,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:53,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244226728] [2024-11-02 12:30:53,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:53,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:53,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:53,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:53,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:53,104 INFO L87 Difference]: Start difference. First operand 657 states and 906 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-02 12:30:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:53,270 INFO L93 Difference]: Finished difference Result 1554 states and 2207 transitions. [2024-11-02 12:30:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2024-11-02 12:30:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:53,274 INFO L225 Difference]: With dead ends: 1554 [2024-11-02 12:30:53,274 INFO L226 Difference]: Without dead ends: 943 [2024-11-02 12:30:53,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:53,276 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 246 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:53,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 804 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-02 12:30:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 855. [2024-11-02 12:30:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 850 states have (on average 1.4423529411764706) internal successors, (1226), 854 states have internal predecessors, (1226), 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) [2024-11-02 12:30:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1226 transitions. [2024-11-02 12:30:53,301 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1226 transitions. Word has length 121 [2024-11-02 12:30:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:53,301 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1226 transitions. [2024-11-02 12:30:53,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-02 12:30:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1226 transitions. [2024-11-02 12:30:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-02 12:30:53,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:53,304 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:53,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:30:53,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:53,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1846733526, now seen corresponding path program 1 times [2024-11-02 12:30:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969395521] [2024-11-02 12:30:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:53,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:53,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:53,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969395521] [2024-11-02 12:30:53,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969395521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:53,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:53,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:53,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252155555] [2024-11-02 12:30:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:53,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:53,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:53,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:53,629 INFO L87 Difference]: Start difference. First operand 855 states and 1226 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-02 12:30:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:53,962 INFO L93 Difference]: Finished difference Result 1614 states and 2325 transitions. [2024-11-02 12:30:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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 124 [2024-11-02 12:30:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:53,966 INFO L225 Difference]: With dead ends: 1614 [2024-11-02 12:30:53,967 INFO L226 Difference]: Without dead ends: 855 [2024-11-02 12:30:53,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:30:53,972 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1120 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:53,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 321 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:30:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-02 12:30:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2024-11-02 12:30:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 850 states have (on average 1.428235294117647) internal successors, (1214), 854 states have internal predecessors, (1214), 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) [2024-11-02 12:30:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1214 transitions. [2024-11-02 12:30:53,998 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1214 transitions. Word has length 124 [2024-11-02 12:30:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:53,999 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1214 transitions. [2024-11-02 12:30:53,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-02 12:30:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1214 transitions. [2024-11-02 12:30:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-02 12:30:54,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:54,004 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:54,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:30:54,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:54,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:54,005 INFO L85 PathProgramCache]: Analyzing trace with hash 549853041, now seen corresponding path program 1 times [2024-11-02 12:30:54,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003244328] [2024-11-02 12:30:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:55,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003244328] [2024-11-02 12:30:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003244328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037179015] [2024-11-02 12:30:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:55,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:55,855 INFO L87 Difference]: Start difference. First operand 855 states and 1214 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-02 12:30:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:56,153 INFO L93 Difference]: Finished difference Result 2327 states and 3338 transitions. [2024-11-02 12:30:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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 124 [2024-11-02 12:30:56,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:56,159 INFO L225 Difference]: With dead ends: 2327 [2024-11-02 12:30:56,159 INFO L226 Difference]: Without dead ends: 1597 [2024-11-02 12:30:56,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:56,162 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 687 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:56,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1529 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:30:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2024-11-02 12:30:56,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1575. [2024-11-02 12:30:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1570 states have (on average 1.4312101910828026) internal successors, (2247), 1574 states have internal predecessors, (2247), 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) [2024-11-02 12:30:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2247 transitions. [2024-11-02 12:30:56,204 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2247 transitions. Word has length 124 [2024-11-02 12:30:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:56,204 INFO L471 AbstractCegarLoop]: Abstraction has 1575 states and 2247 transitions. [2024-11-02 12:30:56,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-02 12:30:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2247 transitions. [2024-11-02 12:30:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-02 12:30:56,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:56,207 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:56,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:30:56,208 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:56,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2137832171, now seen corresponding path program 1 times [2024-11-02 12:30:56,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:56,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105992234] [2024-11-02 12:30:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:56,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:57,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105992234] [2024-11-02 12:30:57,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105992234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:57,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:57,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:30:57,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623266542] [2024-11-02 12:30:57,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:57,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:30:57,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:57,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:30:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:30:57,783 INFO L87 Difference]: Start difference. First operand 1575 states and 2247 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-11-02 12:30:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:58,070 INFO L93 Difference]: Finished difference Result 3668 states and 5258 transitions. [2024-11-02 12:30:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:30:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 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 124 [2024-11-02 12:30:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:58,079 INFO L225 Difference]: With dead ends: 3668 [2024-11-02 12:30:58,080 INFO L226 Difference]: Without dead ends: 2298 [2024-11-02 12:30:58,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:30:58,083 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 1627 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:58,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 743 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:30:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2024-11-02 12:30:58,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2276. [2024-11-02 12:30:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2271 states have (on average 1.419198590929106) internal successors, (3223), 2275 states have internal predecessors, (3223), 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) [2024-11-02 12:30:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3223 transitions. [2024-11-02 12:30:58,159 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3223 transitions. Word has length 124 [2024-11-02 12:30:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:58,160 INFO L471 AbstractCegarLoop]: Abstraction has 2276 states and 3223 transitions. [2024-11-02 12:30:58,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-11-02 12:30:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3223 transitions. [2024-11-02 12:30:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-02 12:30:58,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:58,164 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:58,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:30:58,165 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:58,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1204800708, now seen corresponding path program 1 times [2024-11-02 12:30:58,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:58,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573759406] [2024-11-02 12:30:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:58,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:58,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573759406] [2024-11-02 12:30:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573759406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:58,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549849303] [2024-11-02 12:30:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:58,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:58,338 INFO L87 Difference]: Start difference. First operand 2276 states and 3223 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-02 12:30:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:58,529 INFO L93 Difference]: Finished difference Result 5725 states and 8284 transitions. [2024-11-02 12:30:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:58,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2024-11-02 12:30:58,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:58,542 INFO L225 Difference]: With dead ends: 5725 [2024-11-02 12:30:58,542 INFO L226 Difference]: Without dead ends: 3528 [2024-11-02 12:30:58,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:58,546 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 214 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:58,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 769 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:30:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2024-11-02 12:30:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3322. [2024-11-02 12:30:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3317 states have (on average 1.4678926741031053) internal successors, (4869), 3321 states have internal predecessors, (4869), 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) [2024-11-02 12:30:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4869 transitions. [2024-11-02 12:30:58,637 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4869 transitions. Word has length 126 [2024-11-02 12:30:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:58,638 INFO L471 AbstractCegarLoop]: Abstraction has 3322 states and 4869 transitions. [2024-11-02 12:30:58,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-02 12:30:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4869 transitions. [2024-11-02 12:30:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-02 12:30:58,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:58,641 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:58,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:30:58,642 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:58,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1250982747, now seen corresponding path program 1 times [2024-11-02 12:30:58,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:58,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559445345] [2024-11-02 12:30:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:58,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:58,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:58,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559445345] [2024-11-02 12:30:58,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559445345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:58,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:58,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:58,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315770977] [2024-11-02 12:30:58,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:58,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:58,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:58,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:58,941 INFO L87 Difference]: Start difference. First operand 3322 states and 4869 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-02 12:30:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:59,233 INFO L93 Difference]: Finished difference Result 6602 states and 9691 transitions. [2024-11-02 12:30:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:59,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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 129 [2024-11-02 12:30:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:59,246 INFO L225 Difference]: With dead ends: 6602 [2024-11-02 12:30:59,247 INFO L226 Difference]: Without dead ends: 3322 [2024-11-02 12:30:59,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:30:59,251 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 1113 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:59,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 313 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:30:59,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2024-11-02 12:30:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 3322. [2024-11-02 12:30:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3317 states have (on average 1.451914380464275) internal successors, (4816), 3321 states have internal predecessors, (4816), 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) [2024-11-02 12:30:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4816 transitions. [2024-11-02 12:30:59,336 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4816 transitions. Word has length 129 [2024-11-02 12:30:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:59,337 INFO L471 AbstractCegarLoop]: Abstraction has 3322 states and 4816 transitions. [2024-11-02 12:30:59,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-02 12:30:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4816 transitions. [2024-11-02 12:30:59,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-02 12:30:59,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:59,340 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:30:59,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:30:59,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:30:59,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash 407610912, now seen corresponding path program 1 times [2024-11-02 12:30:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:59,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581714528] [2024-11-02 12:30:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:00,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:00,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581714528] [2024-11-02 12:31:00,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581714528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:00,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:00,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:31:00,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284856835] [2024-11-02 12:31:00,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:00,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:31:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:00,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:31:00,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:00,550 INFO L87 Difference]: Start difference. First operand 3322 states and 4816 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-02 12:31:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:00,828 INFO L93 Difference]: Finished difference Result 9033 states and 13091 transitions. [2024-11-02 12:31:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:31:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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 129 [2024-11-02 12:31:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:00,847 INFO L225 Difference]: With dead ends: 9033 [2024-11-02 12:31:00,848 INFO L226 Difference]: Without dead ends: 5853 [2024-11-02 12:31:00,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:00,853 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 962 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:00,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1069 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:31:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2024-11-02 12:31:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 5831. [2024-11-02 12:31:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 5826 states have (on average 1.4370065224854103) internal successors, (8372), 5830 states have internal predecessors, (8372), 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) [2024-11-02 12:31:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 8372 transitions. [2024-11-02 12:31:01,017 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 8372 transitions. Word has length 129 [2024-11-02 12:31:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:01,017 INFO L471 AbstractCegarLoop]: Abstraction has 5831 states and 8372 transitions. [2024-11-02 12:31:01,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-02 12:31:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 8372 transitions. [2024-11-02 12:31:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-02 12:31:01,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:01,021 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:31:01,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:31:01,022 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:31:01,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1081614779, now seen corresponding path program 1 times [2024-11-02 12:31:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:01,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116690013] [2024-11-02 12:31:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:01,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:02,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:02,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116690013] [2024-11-02 12:31:02,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116690013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:02,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:02,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:31:02,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256443533] [2024-11-02 12:31:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:02,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:31:02,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:02,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:31:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:02,671 INFO L87 Difference]: Start difference. First operand 5831 states and 8372 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:03,027 INFO L93 Difference]: Finished difference Result 7904 states and 11375 transitions. [2024-11-02 12:31:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:31:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2024-11-02 12:31:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:03,048 INFO L225 Difference]: With dead ends: 7904 [2024-11-02 12:31:03,048 INFO L226 Difference]: Without dead ends: 5863 [2024-11-02 12:31:03,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:03,052 INFO L432 NwaCegarLoop]: 631 mSDtfsCounter, 1044 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:03,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 966 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:31:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2024-11-02 12:31:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5823. [2024-11-02 12:31:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5823 states, 5818 states have (on average 1.4372636644895154) internal successors, (8362), 5822 states have internal predecessors, (8362), 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) [2024-11-02 12:31:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5823 states to 5823 states and 8362 transitions. [2024-11-02 12:31:03,193 INFO L78 Accepts]: Start accepts. Automaton has 5823 states and 8362 transitions. Word has length 134 [2024-11-02 12:31:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:03,194 INFO L471 AbstractCegarLoop]: Abstraction has 5823 states and 8362 transitions. [2024-11-02 12:31:03,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5823 states and 8362 transitions. [2024-11-02 12:31:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-02 12:31:03,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:03,199 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:31:03,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:31:03,199 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:31:03,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash -368292051, now seen corresponding path program 1 times [2024-11-02 12:31:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791500620] [2024-11-02 12:31:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:03,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:04,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:04,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791500620] [2024-11-02 12:31:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791500620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-02 12:31:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697036037] [2024-11-02 12:31:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:04,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:31:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:31:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:31:04,963 INFO L87 Difference]: Start difference. First operand 5823 states and 8362 transitions. Second operand has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 11 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:07,667 INFO L93 Difference]: Finished difference Result 26496 states and 39967 transitions. [2024-11-02 12:31:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-02 12:31:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 11 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2024-11-02 12:31:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:07,729 INFO L225 Difference]: With dead ends: 26496 [2024-11-02 12:31:07,729 INFO L226 Difference]: Without dead ends: 21856 [2024-11-02 12:31:07,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2024-11-02 12:31:07,743 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 3273 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3273 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:07,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3273 Valid, 3508 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-02 12:31:07,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21856 states. [2024-11-02 12:31:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21856 to 16849. [2024-11-02 12:31:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16849 states, 16844 states have (on average 1.4963191640940394) internal successors, (25204), 16848 states have internal predecessors, (25204), 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) [2024-11-02 12:31:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16849 states to 16849 states and 25204 transitions. [2024-11-02 12:31:08,295 INFO L78 Accepts]: Start accepts. Automaton has 16849 states and 25204 transitions. Word has length 134 [2024-11-02 12:31:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:08,295 INFO L471 AbstractCegarLoop]: Abstraction has 16849 states and 25204 transitions. [2024-11-02 12:31:08,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 11 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16849 states and 25204 transitions. [2024-11-02 12:31:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-02 12:31:08,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:08,302 INFO L215 NwaCegarLoop]: 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] [2024-11-02 12:31:08,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:31:08,303 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-02 12:31:08,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 863912348, now seen corresponding path program 1 times [2024-11-02 12:31:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:08,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329447438] [2024-11-02 12:31:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:08,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat