./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/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_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/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_3dc8d493-8b9b-474b-911c-704dd5ea3c53/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 cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:26:06,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:26:06,414 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:26:06,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:26:06,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:26:06,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:26:06,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:26:06,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:26:06,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:26:06,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:26:06,464 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:26:06,464 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:26:06,464 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:26:06,464 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:26:06,465 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:26:06,465 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:26:06,465 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:26:06,465 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:26:06,466 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:26:06,466 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:26:06,466 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:26:06,470 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:26:06,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:26:06,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:26:06,471 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:26:06,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:26:06,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:26:06,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:26:06,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:26:06,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:26:06,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:26:06,472 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:26:06,473 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:26:06,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:26:06,475 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:26:06,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:26:06,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:26:06,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:26:06,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:26:06,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:26:06,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:26:06,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:26:06,477 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:26:06,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:26:06,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:26:06,478 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:26:06,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:26:06,478 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_3dc8d493-8b9b-474b-911c-704dd5ea3c53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 [2024-11-02 11:26:06,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:26:06,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:26:06,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:26:06,816 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:26:06,816 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:26:06,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c Unable to find full path for "g++" [2024-11-02 11:26:08,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:26:09,643 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:26:09,645 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2024-11-02 11:26:09,697 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/data/295a37cff/cc64b94bbc4b47c2a19e79e156b162cb/FLAG01e7002b3 [2024-11-02 11:26:10,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/data/295a37cff/cc64b94bbc4b47c2a19e79e156b162cb [2024-11-02 11:26:10,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:26:10,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:26:10,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:26:10,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:26:10,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:26:10,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:26:10" (1/1) ... [2024-11-02 11:26:10,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:10, skipping insertion in model container [2024-11-02 11:26:10,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:26:10" (1/1) ... [2024-11-02 11:26:10,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:26:12,483 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_3dc8d493-8b9b-474b-911c-704dd5ea3c53/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2024-11-02 11:26:12,523 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_3dc8d493-8b9b-474b-911c-704dd5ea3c53/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2024-11-02 11:26:12,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:26:12,710 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:26:14,014 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_3dc8d493-8b9b-474b-911c-704dd5ea3c53/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2024-11-02 11:26:14,060 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_3dc8d493-8b9b-474b-911c-704dd5ea3c53/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2024-11-02 11:26:14,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:26:14,201 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:26:14,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14 WrapperNode [2024-11-02 11:26:14,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:26:14,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:26:14,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:26:14,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:26:14,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:14,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:14,827 INFO L138 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12579 [2024-11-02 11:26:14,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:26:14,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:26:14,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:26:14,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:26:14,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:14,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:14,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:14,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:15,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:15,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:15,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:15,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:15,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:26:15,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:26:15,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:26:15,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:26:15,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (1/1) ... [2024-11-02 11:26:15,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:26:15,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:26:15,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:26:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:26:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:26:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-02 11:26:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-02 11:26:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-02 11:26:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-02 11:26:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-02 11:26:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-02 11:26:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-02 11:26:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-02 11:26:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-02 11:26:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-02 11:26:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-02 11:26:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-02 11:26:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:26:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-02 11:26:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-02 11:26:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:26:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:26:15,925 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:26:15,928 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:26:26,387 INFO L? ?]: Removed 1693 outVars from TransFormulas that were not future-live. [2024-11-02 11:26:26,387 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:26:28,653 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:26:28,656 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-02 11:26:28,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:26:28 BoogieIcfgContainer [2024-11-02 11:26:28,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:26:28,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:26:28,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:26:28,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:26:28,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:26:10" (1/3) ... [2024-11-02 11:26:28,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581fb56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:26:28, skipping insertion in model container [2024-11-02 11:26:28,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:14" (2/3) ... [2024-11-02 11:26:28,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581fb56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:26:28, skipping insertion in model container [2024-11-02 11:26:28,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:26:28" (3/3) ... [2024-11-02 11:26:28,669 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.01.cil-2.c [2024-11-02 11:26:28,688 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:26:28,688 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 11:26:28,823 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:26:28,833 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;@1c34f0e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:26:28,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 11:26:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 1718 states, 1691 states have (on average 1.978119455943229) internal successors, (3345), 1696 states have internal predecessors, (3345), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-02 11:26:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 11:26:28,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:28,860 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] [2024-11-02 11:26:28,861 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:26:28,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1118787660, now seen corresponding path program 1 times [2024-11-02 11:26:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:28,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880998209] [2024-11-02 11:26:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:28,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:26:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:29,323 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 11:26:29,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:26:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880998209] [2024-11-02 11:26:29,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880998209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:26:29,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:26:29,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:26:29,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091225362] [2024-11-02 11:26:29,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:26:29,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:26:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:26:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:26:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:26:29,369 INFO L87 Difference]: Start difference. First operand has 1718 states, 1691 states have (on average 1.978119455943229) internal successors, (3345), 1696 states have internal predecessors, (3345), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:26:30,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:26:30,311 INFO L93 Difference]: Finished difference Result 3487 states and 6837 transitions. [2024-11-02 11:26:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:26:30,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2024-11-02 11:26:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:26:30,344 INFO L225 Difference]: With dead ends: 3487 [2024-11-02 11:26:30,344 INFO L226 Difference]: Without dead ends: 1768 [2024-11-02 11:26:30,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:26:30,361 INFO L432 NwaCegarLoop]: 3192 mSDtfsCounter, 3428 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 6328 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 11:26:30,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3428 Valid, 6328 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 11:26:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2024-11-02 11:26:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1767. [2024-11-02 11:26:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1725 states have (on average 1.9582608695652175) internal successors, (3378), 1729 states have internal predecessors, (3378), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 11:26:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3432 transitions. [2024-11-02 11:26:30,551 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3432 transitions. Word has length 35 [2024-11-02 11:26:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:26:30,552 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 3432 transitions. [2024-11-02 11:26:30,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:26:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3432 transitions. [2024-11-02 11:26:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-02 11:26:30,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:30,557 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:26:30,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:26:30,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:26:30,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash 442092545, now seen corresponding path program 1 times [2024-11-02 11:26:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:30,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064960272] [2024-11-02 11:26:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:30,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:26:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 11:26:31,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:26:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064960272] [2024-11-02 11:26:31,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064960272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:26:31,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:26:31,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 11:26:31,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273104686] [2024-11-02 11:26:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:26:31,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 11:26:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:26:31,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 11:26:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:26:31,129 INFO L87 Difference]: Start difference. First operand 1767 states and 3432 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 11:26:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:26:32,372 INFO L93 Difference]: Finished difference Result 2005 states and 3736 transitions. [2024-11-02 11:26:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 11:26:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2024-11-02 11:26:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:26:32,388 INFO L225 Difference]: With dead ends: 2005 [2024-11-02 11:26:32,388 INFO L226 Difference]: Without dead ends: 1885 [2024-11-02 11:26:32,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-02 11:26:32,391 INFO L432 NwaCegarLoop]: 3143 mSDtfsCounter, 3449 mSDsluCounter, 9326 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 12469 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:26:32,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 12469 Invalid, 1086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 11:26:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2024-11-02 11:26:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1871. [2024-11-02 11:26:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1797 states have (on average 1.929326655537006) internal successors, (3467), 1802 states have internal predecessors, (3467), 48 states have call successors, (48), 25 states have call predecessors, (48), 24 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-02 11:26:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 3561 transitions. [2024-11-02 11:26:32,463 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 3561 transitions. Word has length 61 [2024-11-02 11:26:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:26:32,464 INFO L471 AbstractCegarLoop]: Abstraction has 1871 states and 3561 transitions. [2024-11-02 11:26:32,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 11:26:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 3561 transitions. [2024-11-02 11:26:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-02 11:26:32,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:32,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:26:32,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:26:32,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:26:32,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 894044934, now seen corresponding path program 1 times [2024-11-02 11:26:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:32,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309406697] [2024-11-02 11:26:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:32,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:26:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 11:26:32,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:26:32,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309406697] [2024-11-02 11:26:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309406697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:26:32,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:26:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:26:32,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785239191] [2024-11-02 11:26:32,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:26:32,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:26:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:26:32,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:26:32,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:26:32,546 INFO L87 Difference]: Start difference. First operand 1871 states and 3561 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 11:26:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:26:33,258 INFO L93 Difference]: Finished difference Result 2047 states and 3785 transitions. [2024-11-02 11:26:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:26:33,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-02 11:26:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:26:33,271 INFO L225 Difference]: With dead ends: 2047 [2024-11-02 11:26:33,272 INFO L226 Difference]: Without dead ends: 1925 [2024-11-02 11:26:33,273 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 11:26:33,274 INFO L432 NwaCegarLoop]: 3166 mSDtfsCounter, 27 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6300 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 11:26:33,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6300 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 11:26:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2024-11-02 11:26:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1895. [2024-11-02 11:26:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1817 states have (on average 1.922399559713814) internal successors, (3493), 1822 states have internal predecessors, (3493), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-02 11:26:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 3591 transitions. [2024-11-02 11:26:33,350 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 3591 transitions. Word has length 63 [2024-11-02 11:26:33,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:26:33,351 INFO L471 AbstractCegarLoop]: Abstraction has 1895 states and 3591 transitions. [2024-11-02 11:26:33,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 11:26:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 3591 transitions. [2024-11-02 11:26:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 11:26:33,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:33,354 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:26:33,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:26:33,355 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:26:33,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1283140885, now seen corresponding path program 1 times [2024-11-02 11:26:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:33,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494971845] [2024-11-02 11:26:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:33,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:26:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-02 11:26:33,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:26:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494971845] [2024-11-02 11:26:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494971845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:26:33,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:26:33,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:26:33,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55360558] [2024-11-02 11:26:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:26:33,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:26:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:26:33,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:26:33,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:26:33,435 INFO L87 Difference]: Start difference. First operand 1895 states and 3591 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-02 11:26:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:26:34,054 INFO L93 Difference]: Finished difference Result 2269 states and 4069 transitions. [2024-11-02 11:26:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:26:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 79 [2024-11-02 11:26:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:26:34,068 INFO L225 Difference]: With dead ends: 2269 [2024-11-02 11:26:34,068 INFO L226 Difference]: Without dead ends: 2020 [2024-11-02 11:26:34,070 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 11:26:34,071 INFO L432 NwaCegarLoop]: 3173 mSDtfsCounter, 3332 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:26:34,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 3242 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:26:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2024-11-02 11:26:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2013. [2024-11-02 11:26:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1901 states have (on average 1.8905839032088374) internal successors, (3594), 1907 states have internal predecessors, (3594), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-02 11:26:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 3734 transitions. [2024-11-02 11:26:34,151 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 3734 transitions. Word has length 79 [2024-11-02 11:26:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:26:34,152 INFO L471 AbstractCegarLoop]: Abstraction has 2013 states and 3734 transitions. [2024-11-02 11:26:34,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-02 11:26:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 3734 transitions. [2024-11-02 11:26:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-02 11:26:34,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:34,159 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:26:34,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 11:26:34,160 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:26:34,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash -560122825, now seen corresponding path program 1 times [2024-11-02 11:26:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:34,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915494213] [2024-11-02 11:26:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:26:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 11:26:34,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:26:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915494213] [2024-11-02 11:26:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915494213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:26:34,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692497142] [2024-11-02 11:26:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:34,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:26:34,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:26:34,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:26:34,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:26:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:34,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 11:26:34,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:26:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 11:26:34,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:26:34,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692497142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:26:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:26:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-02 11:26:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153219867] [2024-11-02 11:26:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:26:34,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:26:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:26:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:26:34,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:26:34,593 INFO L87 Difference]: Start difference. First operand 2013 states and 3734 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-02 11:26:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:26:35,449 INFO L93 Difference]: Finished difference Result 2267 states and 4070 transitions. [2024-11-02 11:26:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:26:35,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 91 [2024-11-02 11:26:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:26:35,459 INFO L225 Difference]: With dead ends: 2267 [2024-11-02 11:26:35,459 INFO L226 Difference]: Without dead ends: 2019 [2024-11-02 11:26:35,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:26:35,463 INFO L432 NwaCegarLoop]: 3159 mSDtfsCounter, 66 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 11:26:35,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 6285 Invalid, 468 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 11:26:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2024-11-02 11:26:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2011. [2024-11-02 11:26:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1899 states have (on average 1.886255924170616) internal successors, (3582), 1905 states have internal predecessors, (3582), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-02 11:26:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 3722 transitions. [2024-11-02 11:26:35,576 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 3722 transitions. Word has length 91 [2024-11-02 11:26:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:26:35,578 INFO L471 AbstractCegarLoop]: Abstraction has 2011 states and 3722 transitions. [2024-11-02 11:26:35,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-02 11:26:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 3722 transitions. [2024-11-02 11:26:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-02 11:26:35,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:35,584 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:26:35,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 11:26:35,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dc8d493-8b9b-474b-911c-704dd5ea3c53/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:26:35,790 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:26:35,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:35,791 INFO L85 PathProgramCache]: Analyzing trace with hash 38438551, now seen corresponding path program 1 times [2024-11-02 11:26:35,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:35,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218243498] [2024-11-02 11:26:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:35,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms