./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje --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 211a040b667c92c6d715ed7462c0db91088ae0b583b29f60ca2f33cb3ca9ce8b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:39:29,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:39:29,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:39:29,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:39:29,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:39:29,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:39:29,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:39:29,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:39:29,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:39:29,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:39:29,390 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:39:29,390 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:39:29,391 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:39:29,391 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:39:29,392 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:39:29,392 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:39:29,392 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:39:29,393 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:39:29,393 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:39:29,394 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:39:29,394 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:39:29,399 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:39:29,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:39:29,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:39:29,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:39:29,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:39:29,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:39:29,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:39:29,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:39:29,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:39:29,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:39:29,405 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:39:29,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:39:29,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:39:29,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:39:29,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:39:29,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:39:29,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:39:29,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:39:29,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:39:29,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:39:29,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:39:29,409 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:39:29,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:39:29,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:39:29,410 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:39:29,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:39:29,411 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_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211a040b667c92c6d715ed7462c0db91088ae0b583b29f60ca2f33cb3ca9ce8b [2024-11-09 05:39:29,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:39:29,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:39:29,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:39:29,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:39:29,816 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:39:29,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c Unable to find full path for "g++" [2024-11-09 05:39:31,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:39:32,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:39:32,699 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c [2024-11-09 05:39:32,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/data/aba7d6b75/7a259fa4096e45b1a7500b93b57c7c91/FLAG09d351048 [2024-11-09 05:39:32,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/data/aba7d6b75/7a259fa4096e45b1a7500b93b57c7c91 [2024-11-09 05:39:32,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:39:32,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:39:32,806 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:39:32,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:39:32,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:39:32,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:39:32" (1/1) ... [2024-11-09 05:39:32,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ad6c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:32, skipping insertion in model container [2024-11-09 05:39:32,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:39:32" (1/1) ... [2024-11-09 05:39:33,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:39:35,613 WARN L250 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_f7742df2-0d0d-4d19-8713-c79983612038/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[380593,380606] [2024-11-09 05:39:35,650 WARN L250 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_f7742df2-0d0d-4d19-8713-c79983612038/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[383339,383352] [2024-11-09 05:39:35,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:39:35,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:39:37,206 WARN L250 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_f7742df2-0d0d-4d19-8713-c79983612038/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[380593,380606] [2024-11-09 05:39:37,211 WARN L250 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_f7742df2-0d0d-4d19-8713-c79983612038/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-1.c[383339,383352] [2024-11-09 05:39:37,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:39:37,288 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:39:37,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37 WrapperNode [2024-11-09 05:39:37,289 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:39:37,290 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:39:37,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:39:37,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:39:37,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:37,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:37,941 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12804 [2024-11-09 05:39:37,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:39:37,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:39:37,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:39:37,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:39:37,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:37,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:39:38,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:39:38,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:39:38,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:39:38,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (1/1) ... [2024-11-09 05:39:38,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:39:38,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:39:38,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:39:38,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:39:38,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:39:38,595 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-09 05:39:38,596 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-09 05:39:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-09 05:39:38,596 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-09 05:39:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-09 05:39:38,596 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-09 05:39:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-09 05:39:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-09 05:39:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-09 05:39:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-09 05:39:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-09 05:39:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-09 05:39:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:39:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:39:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:39:38,836 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:39:38,838 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:39:49,448 INFO L? ?]: Removed 1713 outVars from TransFormulas that were not future-live. [2024-11-09 05:39:49,448 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:39:52,014 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:39:52,017 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-09 05:39:52,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:39:52 BoogieIcfgContainer [2024-11-09 05:39:52,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:39:52,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:39:52,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:39:52,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:39:52,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:39:32" (1/3) ... [2024-11-09 05:39:52,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1c83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:39:52, skipping insertion in model container [2024-11-09 05:39:52,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:37" (2/3) ... [2024-11-09 05:39:52,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1c83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:39:52, skipping insertion in model container [2024-11-09 05:39:52,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:39:52" (3/3) ... [2024-11-09 05:39:52,032 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-1.c [2024-11-09 05:39:52,058 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:39:52,058 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 05:39:52,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:39:52,196 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;@3ea4ad85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:39:52,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 05:39:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 1760 states, 1732 states have (on average 1.9670900692840647) internal successors, (3407), 1735 states have internal predecessors, (3407), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-09 05:39:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 05:39:52,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:52,222 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] [2024-11-09 05:39:52,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:52,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1504018955, now seen corresponding path program 1 times [2024-11-09 05:39:52,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:52,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102785186] [2024-11-09 05:39:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:52,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:39:52,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102785186] [2024-11-09 05:39:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102785186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:52,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:39:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085203091] [2024-11-09 05:39:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:52,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:39:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:39:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:39:52,793 INFO L87 Difference]: Start difference. First operand has 1760 states, 1732 states have (on average 1.9670900692840647) internal successors, (3407), 1735 states have internal predecessors, (3407), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:39:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:53,999 INFO L93 Difference]: Finished difference Result 3620 states and 7053 transitions. [2024-11-09 05:39:54,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:39:54,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2024-11-09 05:39:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:54,033 INFO L225 Difference]: With dead ends: 3620 [2024-11-09 05:39:54,035 INFO L226 Difference]: Without dead ends: 1859 [2024-11-09 05:39:54,045 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 [2024-11-09 05:39:54,050 INFO L432 NwaCegarLoop]: 3313 mSDtfsCounter, 3560 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 6556 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:54,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3560 Valid, 6556 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:39:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2024-11-09 05:39:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1858. [2024-11-09 05:39:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1810 states have (on average 1.938121546961326) internal successors, (3508), 1813 states have internal predecessors, (3508), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-09 05:39:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 3576 transitions. [2024-11-09 05:39:54,243 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 3576 transitions. Word has length 46 [2024-11-09 05:39:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:54,244 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 3576 transitions. [2024-11-09 05:39:54,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:39:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 3576 transitions. [2024-11-09 05:39:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:39:54,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:54,255 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:54,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:39:54,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:54,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:54,257 INFO L85 PathProgramCache]: Analyzing trace with hash 813446955, now seen corresponding path program 1 times [2024-11-09 05:39:54,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:54,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459544338] [2024-11-09 05:39:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:54,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:39:54,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459544338] [2024-11-09 05:39:54,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459544338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:39:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054176490] [2024-11-09 05:39:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:54,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:39:54,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:39:54,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:39:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:54,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:39:54,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:39:54,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:39:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054176490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:54,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:39:54,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 05:39:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572820344] [2024-11-09 05:39:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:54,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:39:54,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:54,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:39:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:39:54,820 INFO L87 Difference]: Start difference. First operand 1858 states and 3576 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:39:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:55,365 INFO L93 Difference]: Finished difference Result 2275 states and 4181 transitions. [2024-11-09 05:39:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:39:55,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2024-11-09 05:39:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:55,382 INFO L225 Difference]: With dead ends: 2275 [2024-11-09 05:39:55,383 INFO L226 Difference]: Without dead ends: 2063 [2024-11-09 05:39:55,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:39:55,387 INFO L432 NwaCegarLoop]: 3229 mSDtfsCounter, 3405 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3405 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:55,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3405 Valid, 3355 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:39:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2024-11-09 05:39:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2059. [2024-11-09 05:39:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1971 states have (on average 1.8939624556062913) internal successors, (3733), 1975 states have internal predecessors, (3733), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-09 05:39:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 3857 transitions. [2024-11-09 05:39:55,472 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 3857 transitions. Word has length 88 [2024-11-09 05:39:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:55,473 INFO L471 AbstractCegarLoop]: Abstraction has 2059 states and 3857 transitions. [2024-11-09 05:39:55,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:39:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 3857 transitions. [2024-11-09 05:39:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:39:55,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:55,481 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:55,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:39:55,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:55,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:55,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:55,683 INFO L85 PathProgramCache]: Analyzing trace with hash -724732695, now seen corresponding path program 1 times [2024-11-09 05:39:55,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:55,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184776663] [2024-11-09 05:39:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:55,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:39:55,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:55,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184776663] [2024-11-09 05:39:55,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184776663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:39:55,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797539928] [2024-11-09 05:39:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:55,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:55,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:39:55,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:39:55,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:39:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:56,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:39:56,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:39:56,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:39:56,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797539928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:56,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:39:56,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 05:39:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055588988] [2024-11-09 05:39:56,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:56,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:39:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:39:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:39:56,133 INFO L87 Difference]: Start difference. First operand 2059 states and 3857 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:39:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:56,789 INFO L93 Difference]: Finished difference Result 2872 states and 5028 transitions. [2024-11-09 05:39:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:39:56,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2024-11-09 05:39:56,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:56,802 INFO L225 Difference]: With dead ends: 2872 [2024-11-09 05:39:56,803 INFO L226 Difference]: Without dead ends: 2459 [2024-11-09 05:39:56,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:39:56,807 INFO L432 NwaCegarLoop]: 3190 mSDtfsCounter, 3399 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:56,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3399 Valid, 3316 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:39:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2024-11-09 05:39:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2453. [2024-11-09 05:39:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2287 states have (on average 1.8237866200262352) internal successors, (4171), 2293 states have internal predecessors, (4171), 116 states have call successors, (116), 48 states have call predecessors, (116), 48 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-09 05:39:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 4403 transitions. [2024-11-09 05:39:56,925 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 4403 transitions. Word has length 88 [2024-11-09 05:39:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:56,926 INFO L471 AbstractCegarLoop]: Abstraction has 2453 states and 4403 transitions. [2024-11-09 05:39:56,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:39:56,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 4403 transitions. [2024-11-09 05:39:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:39:56,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:56,932 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:56,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:39:57,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:57,132 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:57,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1733777703, now seen corresponding path program 1 times [2024-11-09 05:39:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381322833] [2024-11-09 05:39:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:57,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:39:57,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:57,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381322833] [2024-11-09 05:39:57,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381322833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:39:57,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701941165] [2024-11-09 05:39:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:57,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:57,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:39:57,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:39:57,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:39:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:57,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:39:57,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 05:39:57,618 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:39:57,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701941165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:57,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:39:57,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 05:39:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618193857] [2024-11-09 05:39:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:57,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:39:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:39:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:39:57,621 INFO L87 Difference]: Start difference. First operand 2453 states and 4403 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:39:58,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:58,202 INFO L93 Difference]: Finished difference Result 4042 states and 6672 transitions. [2024-11-09 05:39:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:39:58,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2024-11-09 05:39:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:58,219 INFO L225 Difference]: With dead ends: 4042 [2024-11-09 05:39:58,219 INFO L226 Difference]: Without dead ends: 3235 [2024-11-09 05:39:58,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:39:58,225 INFO L432 NwaCegarLoop]: 3190 mSDtfsCounter, 3408 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3408 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:58,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3408 Valid, 3316 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:39:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2024-11-09 05:39:58,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3225. [2024-11-09 05:39:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 2907 states have (on average 1.7278981768145856) internal successors, (5023), 2917 states have internal predecessors, (5023), 220 states have call successors, (220), 96 states have call predecessors, (220), 96 states have return successors, (220), 212 states have call predecessors, (220), 220 states have call successors, (220) [2024-11-09 05:39:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 5463 transitions. [2024-11-09 05:39:58,386 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 5463 transitions. Word has length 88 [2024-11-09 05:39:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:58,387 INFO L471 AbstractCegarLoop]: Abstraction has 3225 states and 5463 transitions. [2024-11-09 05:39:58,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:39:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 5463 transitions. [2024-11-09 05:39:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:39:58,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:58,396 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:58,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:39:58,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:58,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:58,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:58,607 INFO L85 PathProgramCache]: Analyzing trace with hash 829905577, now seen corresponding path program 1 times [2024-11-09 05:39:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117009589] [2024-11-09 05:39:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:39:58,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117009589] [2024-11-09 05:39:58,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117009589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:58,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:58,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:39:58,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627196595] [2024-11-09 05:39:58,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:58,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:39:58,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:58,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:39:58,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:39:58,775 INFO L87 Difference]: Start difference. First operand 3225 states and 5463 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:39:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:59,647 INFO L93 Difference]: Finished difference Result 4475 states and 7240 transitions. [2024-11-09 05:39:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:39:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2024-11-09 05:39:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:59,672 INFO L225 Difference]: With dead ends: 4475 [2024-11-09 05:39:59,672 INFO L226 Difference]: Without dead ends: 3665 [2024-11-09 05:39:59,675 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 [2024-11-09 05:39:59,679 INFO L432 NwaCegarLoop]: 3264 mSDtfsCounter, 69 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 6460 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:59,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 6460 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:39:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2024-11-09 05:39:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3517. [2024-11-09 05:39:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 3183 states have (on average 1.7137920201068175) internal successors, (5455), 3193 states have internal predecessors, (5455), 228 states have call successors, (228), 104 states have call predecessors, (228), 104 states have return successors, (228), 220 states have call predecessors, (228), 228 states have call successors, (228) [2024-11-09 05:39:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 5911 transitions. [2024-11-09 05:39:59,851 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 5911 transitions. Word has length 88 [2024-11-09 05:39:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:59,852 INFO L471 AbstractCegarLoop]: Abstraction has 3517 states and 5911 transitions. [2024-11-09 05:39:59,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:39:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 5911 transitions. [2024-11-09 05:39:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 05:39:59,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:59,860 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-11-09 05:39:59,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:39:59,861 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:59,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2091775478, now seen corresponding path program 1 times [2024-11-09 05:39:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:59,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808724348] [2024-11-09 05:39:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:39:59,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:59,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808724348] [2024-11-09 05:39:59,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808724348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:59,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:59,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:39:59,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563143367] [2024-11-09 05:39:59,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:59,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:39:59,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:39:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:39:59,967 INFO L87 Difference]: Start difference. First operand 3517 states and 5911 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:40:00,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:00,617 INFO L93 Difference]: Finished difference Result 7186 states and 11156 transitions. [2024-11-09 05:40:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:00,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 118 [2024-11-09 05:40:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:00,643 INFO L225 Difference]: With dead ends: 7186 [2024-11-09 05:40:00,643 INFO L226 Difference]: Without dead ends: 5315 [2024-11-09 05:40:00,651 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 [2024-11-09 05:40:00,652 INFO L432 NwaCegarLoop]: 3192 mSDtfsCounter, 3398 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:00,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3398 Valid, 3318 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:40:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2024-11-09 05:40:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 5289. [2024-11-09 05:40:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 4643 states have (on average 1.6108119750161534) internal successors, (7479), 4661 states have internal predecessors, (7479), 436 states have call successors, (436), 208 states have call predecessors, (436), 208 states have return successors, (436), 420 states have call predecessors, (436), 436 states have call successors, (436) [2024-11-09 05:40:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 8351 transitions. [2024-11-09 05:40:00,908 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 8351 transitions. Word has length 118 [2024-11-09 05:40:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:00,909 INFO L471 AbstractCegarLoop]: Abstraction has 5289 states and 8351 transitions. [2024-11-09 05:40:00,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:40:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 8351 transitions. [2024-11-09 05:40:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 05:40:00,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:00,920 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-11-09 05:40:00,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:40:00,921 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:00,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1245198819, now seen corresponding path program 1 times [2024-11-09 05:40:00,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:00,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134316082] [2024-11-09 05:40:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:40:01,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134316082] [2024-11-09 05:40:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134316082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:01,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:01,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:40:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025188068] [2024-11-09 05:40:01,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:01,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:01,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:40:01,004 INFO L87 Difference]: Start difference. First operand 5289 states and 8351 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:40:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:01,723 INFO L93 Difference]: Finished difference Result 12430 states and 18436 transitions. [2024-11-09 05:40:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 118 [2024-11-09 05:40:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:01,769 INFO L225 Difference]: With dead ends: 12430 [2024-11-09 05:40:01,769 INFO L226 Difference]: Without dead ends: 8787 [2024-11-09 05:40:01,785 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 [2024-11-09 05:40:01,786 INFO L432 NwaCegarLoop]: 3210 mSDtfsCounter, 3401 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:01,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3401 Valid, 3336 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:40:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8787 states. [2024-11-09 05:40:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8787 to 8737. [2024-11-09 05:40:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8737 states, 7483 states have (on average 1.5190431645062141) internal successors, (11367), 7517 states have internal predecessors, (11367), 836 states have call successors, (836), 416 states have call predecessors, (836), 416 states have return successors, (836), 804 states have call predecessors, (836), 836 states have call successors, (836) [2024-11-09 05:40:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8737 states to 8737 states and 13039 transitions. [2024-11-09 05:40:02,482 INFO L78 Accepts]: Start accepts. Automaton has 8737 states and 13039 transitions. Word has length 118 [2024-11-09 05:40:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:02,483 INFO L471 AbstractCegarLoop]: Abstraction has 8737 states and 13039 transitions. [2024-11-09 05:40:02,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:40:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8737 states and 13039 transitions. [2024-11-09 05:40:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 05:40:02,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:02,521 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:40:02,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:40:02,521 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:02,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:02,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1055283933, now seen corresponding path program 1 times [2024-11-09 05:40:02,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:02,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192541697] [2024-11-09 05:40:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:02,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 05:40:02,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192541697] [2024-11-09 05:40:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192541697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382474134] [2024-11-09 05:40:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:02,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:02,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:02,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:40:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:02,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:40:03,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:40:03,067 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:40:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382474134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:03,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:40:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 05:40:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677513291] [2024-11-09 05:40:03,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:03,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:03,070 INFO L87 Difference]: Start difference. First operand 8737 states and 13039 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:40:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:04,272 INFO L93 Difference]: Finished difference Result 14693 states and 21489 transitions. [2024-11-09 05:40:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 134 [2024-11-09 05:40:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:04,329 INFO L225 Difference]: With dead ends: 14693 [2024-11-09 05:40:04,330 INFO L226 Difference]: Without dead ends: 11051 [2024-11-09 05:40:04,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:04,347 INFO L432 NwaCegarLoop]: 3260 mSDtfsCounter, 76 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6455 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:04,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6455 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:40:04,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11051 states. [2024-11-09 05:40:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11051 to 10265. [2024-11-09 05:40:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10265 states, 8915 states have (on average 1.5209197980931015) internal successors, (13559), 8949 states have internal predecessors, (13559), 884 states have call successors, (884), 464 states have call predecessors, (884), 464 states have return successors, (884), 852 states have call predecessors, (884), 884 states have call successors, (884) [2024-11-09 05:40:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10265 states to 10265 states and 15327 transitions. [2024-11-09 05:40:05,063 INFO L78 Accepts]: Start accepts. Automaton has 10265 states and 15327 transitions. Word has length 134 [2024-11-09 05:40:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:05,063 INFO L471 AbstractCegarLoop]: Abstraction has 10265 states and 15327 transitions. [2024-11-09 05:40:05,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:40:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 10265 states and 15327 transitions. [2024-11-09 05:40:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 05:40:05,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:05,093 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:40:05,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:40:05,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:05,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:05,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1979473542, now seen corresponding path program 1 times [2024-11-09 05:40:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:05,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991871837] [2024-11-09 05:40:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 05:40:05,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991871837] [2024-11-09 05:40:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991871837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673785465] [2024-11-09 05:40:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:05,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:05,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:40:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:05,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:40:05,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:40:05,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:40:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673785465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:05,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:40:05,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 05:40:05,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019963656] [2024-11-09 05:40:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:05,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:05,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:05,671 INFO L87 Difference]: Start difference. First operand 10265 states and 15327 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:40:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:06,500 INFO L93 Difference]: Finished difference Result 17853 states and 26137 transitions. [2024-11-09 05:40:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:06,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 134 [2024-11-09 05:40:06,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:06,569 INFO L225 Difference]: With dead ends: 17853 [2024-11-09 05:40:06,569 INFO L226 Difference]: Without dead ends: 13459 [2024-11-09 05:40:06,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:06,589 INFO L432 NwaCegarLoop]: 3282 mSDtfsCounter, 88 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 6479 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:06,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 6479 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:40:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13459 states. [2024-11-09 05:40:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13459 to 12449. [2024-11-09 05:40:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10955 states have (on average 1.5181195801004108) internal successors, (16631), 10989 states have internal predecessors, (16631), 956 states have call successors, (956), 536 states have call predecessors, (956), 536 states have return successors, (956), 924 states have call predecessors, (956), 956 states have call successors, (956) [2024-11-09 05:40:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18543 transitions. [2024-11-09 05:40:07,235 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18543 transitions. Word has length 134 [2024-11-09 05:40:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:07,236 INFO L471 AbstractCegarLoop]: Abstraction has 12449 states and 18543 transitions. [2024-11-09 05:40:07,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:40:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18543 transitions. [2024-11-09 05:40:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 05:40:07,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:07,263 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:40:07,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:40:07,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:07,464 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:07,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1438620051, now seen corresponding path program 1 times [2024-11-09 05:40:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772872050] [2024-11-09 05:40:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 05:40:07,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772872050] [2024-11-09 05:40:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772872050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138705953] [2024-11-09 05:40:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:07,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:07,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:07,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:07,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:40:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:07,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:40:07,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:40:07,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:40:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138705953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:07,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:40:07,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 05:40:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409304219] [2024-11-09 05:40:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:07,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:07,855 INFO L87 Difference]: Start difference. First operand 12449 states and 18543 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:40:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:08,816 INFO L93 Difference]: Finished difference Result 22333 states and 32749 transitions. [2024-11-09 05:40:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:08,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 134 [2024-11-09 05:40:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:08,883 INFO L225 Difference]: With dead ends: 22333 [2024-11-09 05:40:08,883 INFO L226 Difference]: Without dead ends: 16775 [2024-11-09 05:40:08,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:08,901 INFO L432 NwaCegarLoop]: 3287 mSDtfsCounter, 94 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 6484 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:08,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 6484 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:40:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16775 states. [2024-11-09 05:40:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16775 to 15653. [2024-11-09 05:40:09,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15653 states, 13943 states have (on average 1.5129455640823353) internal successors, (21095), 13977 states have internal predecessors, (21095), 1064 states have call successors, (1064), 644 states have call predecessors, (1064), 644 states have return successors, (1064), 1032 states have call predecessors, (1064), 1064 states have call successors, (1064) [2024-11-09 05:40:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15653 states to 15653 states and 23223 transitions. [2024-11-09 05:40:09,706 INFO L78 Accepts]: Start accepts. Automaton has 15653 states and 23223 transitions. Word has length 134 [2024-11-09 05:40:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:09,707 INFO L471 AbstractCegarLoop]: Abstraction has 15653 states and 23223 transitions. [2024-11-09 05:40:09,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:40:09,708 INFO L276 IsEmpty]: Start isEmpty. Operand 15653 states and 23223 transitions. [2024-11-09 05:40:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 05:40:09,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:09,744 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:40:09,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 05:40:09,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:09,946 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:09,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2095895616, now seen corresponding path program 1 times [2024-11-09 05:40:09,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:09,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288421276] [2024-11-09 05:40:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:09,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 05:40:10,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288421276] [2024-11-09 05:40:10,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288421276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059590253] [2024-11-09 05:40:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:10,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:10,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:10,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:10,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:40:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:10,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 05:40:10,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 60 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:40:11,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:40:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 05:40:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059590253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:40:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640314541] [2024-11-09 05:40:11,695 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2024-11-09 05:40:11,695 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:40:11,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:40:11,704 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:40:11,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:40:34,259 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 192 for LOIs [2024-11-09 05:40:34,506 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 181 for LOIs [2024-11-09 05:40:34,721 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 144 for LOIs [2024-11-09 05:40:34,920 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 75 for LOIs [2024-11-09 05:40:35,028 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 108 for LOIs [2024-11-09 05:40:35,448 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 75 for LOIs [2024-11-09 05:40:37,106 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:40:55,924 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '195888#(and (= ~a15~0 1) (exists ((|v_ULTIMATE.start_eval_~tmp~0#1_21| Int)) (and (not (= |v_ULTIMATE.start_eval_~tmp~0#1_21| 0)) (<= |v_ULTIMATE.start_eval_~tmp~0#1_21| 1) (<= 0 |v_ULTIMATE.start_eval_~tmp~0#1_21|))) (= 5 ~a20~0) (<= 1 |#StackHeapBarrier|) (<= ~local~0 2147483647) (= 0 ~t5_pc~0) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (exists ((|v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_17| Int)) (and (<= 0 (+ |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_17| 2147483648)) (not (= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_17| 0)) (<= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_17| 2147483647))) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (<= ~token~0 2147483647) (= ~t5_i~0 1) (= ~a27~0 1) (= 0 ~t4_pc~0) (= ~t3_i~0 1) (= ~t4_i~0 1) (<= 0 (+ ~token~0 2147483648)) (= ~a2~0 10) (not (= ~token~0 (+ 5 ~local~0))))' at error location [2024-11-09 05:40:55,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:40:55,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:40:55,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 21 [2024-11-09 05:40:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699939925] [2024-11-09 05:40:55,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:40:55,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 05:40:55,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:55,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 05:40:55,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=3304, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 05:40:55,928 INFO L87 Difference]: Start difference. First operand 15653 states and 23223 transitions. Second operand has 21 states, 14 states have (on average 15.071428571428571) internal successors, (211), 16 states have internal predecessors, (211), 10 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2024-11-09 05:41:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:00,406 INFO L93 Difference]: Finished difference Result 48303 states and 69811 transitions. [2024-11-09 05:41:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 05:41:00,406 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 15.071428571428571) internal successors, (211), 16 states have internal predecessors, (211), 10 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) Word has length 138 [2024-11-09 05:41:00,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:00,552 INFO L225 Difference]: With dead ends: 48303 [2024-11-09 05:41:00,552 INFO L226 Difference]: Without dead ends: 34297 [2024-11-09 05:41:00,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 346 SyntacticMatches, 38 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=978, Invalid=7578, Unknown=0, NotChecked=0, Total=8556 [2024-11-09 05:41:00,595 INFO L432 NwaCegarLoop]: 3157 mSDtfsCounter, 15856 mSDsluCounter, 22043 mSDsCounter, 0 mSdLazyCounter, 2970 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15856 SdHoareTripleChecker+Valid, 25200 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 2970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:00,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15856 Valid, 25200 Invalid, 3761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [791 Valid, 2970 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 05:41:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34297 states. [2024-11-09 05:41:01,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34297 to 32003. [2024-11-09 05:41:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32003 states, 28181 states have (on average 1.4548454632553849) internal successors, (40999), 28255 states have internal predecessors, (40999), 2308 states have call successors, (2308), 1512 states have call predecessors, (2308), 1512 states have return successors, (2308), 2236 states have call predecessors, (2308), 2308 states have call successors, (2308) [2024-11-09 05:41:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32003 states to 32003 states and 45615 transitions. [2024-11-09 05:41:02,061 INFO L78 Accepts]: Start accepts. Automaton has 32003 states and 45615 transitions. Word has length 138 [2024-11-09 05:41:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:02,061 INFO L471 AbstractCegarLoop]: Abstraction has 32003 states and 45615 transitions. [2024-11-09 05:41:02,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 14 states have (on average 15.071428571428571) internal successors, (211), 16 states have internal predecessors, (211), 10 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2024-11-09 05:41:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 32003 states and 45615 transitions. [2024-11-09 05:41:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 05:41:02,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:02,104 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:02,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:41:02,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:02,308 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:02,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1870631809, now seen corresponding path program 1 times [2024-11-09 05:41:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:02,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112990448] [2024-11-09 05:41:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:41:02,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:02,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112990448] [2024-11-09 05:41:02,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112990448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75875007] [2024-11-09 05:41:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:02,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:02,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:02,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:02,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:41:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:02,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:41:02,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:41:02,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:41:02,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75875007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:02,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:41:02,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:41:02,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150239397] [2024-11-09 05:41:02,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:02,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:02,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:02,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:41:02,763 INFO L87 Difference]: Start difference. First operand 32003 states and 45615 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:41:04,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:04,322 INFO L93 Difference]: Finished difference Result 53928 states and 77133 transitions. [2024-11-09 05:41:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:04,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 135 [2024-11-09 05:41:04,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:04,435 INFO L225 Difference]: With dead ends: 53928 [2024-11-09 05:41:04,435 INFO L226 Difference]: Without dead ends: 32053 [2024-11-09 05:41:04,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:41:04,474 INFO L432 NwaCegarLoop]: 3277 mSDtfsCounter, 130 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 6460 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:04,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 6460 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:41:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32053 states. [2024-11-09 05:41:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32053 to 31775. [2024-11-09 05:41:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31775 states, 27953 states have (on average 1.4418130433227203) internal successors, (40303), 28027 states have internal predecessors, (40303), 2308 states have call successors, (2308), 1512 states have call predecessors, (2308), 1512 states have return successors, (2308), 2236 states have call predecessors, (2308), 2308 states have call successors, (2308) [2024-11-09 05:41:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31775 states to 31775 states and 44919 transitions. [2024-11-09 05:41:05,740 INFO L78 Accepts]: Start accepts. Automaton has 31775 states and 44919 transitions. Word has length 135 [2024-11-09 05:41:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:05,740 INFO L471 AbstractCegarLoop]: Abstraction has 31775 states and 44919 transitions. [2024-11-09 05:41:05,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:41:05,741 INFO L276 IsEmpty]: Start isEmpty. Operand 31775 states and 44919 transitions. [2024-11-09 05:41:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 05:41:05,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:05,785 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:05,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:41:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:05,986 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:05,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash -392257025, now seen corresponding path program 1 times [2024-11-09 05:41:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:05,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120707177] [2024-11-09 05:41:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:05,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 10 proven. 38 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:41:06,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120707177] [2024-11-09 05:41:06,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120707177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913188680] [2024-11-09 05:41:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:06,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:06,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:06,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:06,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:41:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:06,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:41:06,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:41:06,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:41:06,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913188680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:06,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:41:06,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:41:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941957244] [2024-11-09 05:41:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:06,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:06,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:41:06,437 INFO L87 Difference]: Start difference. First operand 31775 states and 44919 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:41:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:07,899 INFO L93 Difference]: Finished difference Result 55441 states and 77458 transitions. [2024-11-09 05:41:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:07,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 135 [2024-11-09 05:41:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:08,019 INFO L225 Difference]: With dead ends: 55441 [2024-11-09 05:41:08,019 INFO L226 Difference]: Without dead ends: 35507 [2024-11-09 05:41:08,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:41:08,062 INFO L432 NwaCegarLoop]: 3208 mSDtfsCounter, 3409 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3409 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:08,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3409 Valid, 3241 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:41:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35507 states. [2024-11-09 05:41:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35507 to 35507. [2024-11-09 05:41:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35507 states, 31293 states have (on average 1.4115297350845237) internal successors, (44171), 31367 states have internal predecessors, (44171), 2432 states have call successors, (2432), 1780 states have call predecessors, (2432), 1780 states have return successors, (2432), 2360 states have call predecessors, (2432), 2432 states have call successors, (2432) [2024-11-09 05:41:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35507 states to 35507 states and 49035 transitions. [2024-11-09 05:41:09,426 INFO L78 Accepts]: Start accepts. Automaton has 35507 states and 49035 transitions. Word has length 135 [2024-11-09 05:41:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:09,427 INFO L471 AbstractCegarLoop]: Abstraction has 35507 states and 49035 transitions. [2024-11-09 05:41:09,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:41:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 35507 states and 49035 transitions. [2024-11-09 05:41:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-09 05:41:09,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:09,483 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:09,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:41:09,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:09,684 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:09,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash -477680646, now seen corresponding path program 1 times [2024-11-09 05:41:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:09,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896851138] [2024-11-09 05:41:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:09,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 39 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:41:09,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896851138] [2024-11-09 05:41:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896851138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558441693] [2024-11-09 05:41:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:09,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:09,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:09,902 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:09,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:41:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:10,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:41:10,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 05:41:10,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:41:10,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558441693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:10,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:41:10,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:41:10,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66542882] [2024-11-09 05:41:10,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:10,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:10,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:10,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:10,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:41:10,103 INFO L87 Difference]: Start difference. First operand 35507 states and 49035 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:41:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:12,228 INFO L93 Difference]: Finished difference Result 84827 states and 117036 transitions. [2024-11-09 05:41:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:12,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 136 [2024-11-09 05:41:12,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:12,411 INFO L225 Difference]: With dead ends: 84827 [2024-11-09 05:41:12,411 INFO L226 Difference]: Without dead ends: 50967 [2024-11-09 05:41:12,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:41:12,472 INFO L432 NwaCegarLoop]: 3206 mSDtfsCounter, 72 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 6387 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:12,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 6387 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:41:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50967 states. [2024-11-09 05:41:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50967 to 41833. [2024-11-09 05:41:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41833 states, 37183 states have (on average 1.4233117284780679) internal successors, (52923), 37258 states have internal predecessors, (52923), 2650 states have call successors, (2650), 1998 states have call predecessors, (2650), 1998 states have return successors, (2650), 2577 states have call predecessors, (2650), 2650 states have call successors, (2650) [2024-11-09 05:41:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41833 states to 41833 states and 58223 transitions. [2024-11-09 05:41:14,431 INFO L78 Accepts]: Start accepts. Automaton has 41833 states and 58223 transitions. Word has length 136 [2024-11-09 05:41:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:14,432 INFO L471 AbstractCegarLoop]: Abstraction has 41833 states and 58223 transitions. [2024-11-09 05:41:14,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:41:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 41833 states and 58223 transitions. [2024-11-09 05:41:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-09 05:41:14,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:14,491 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:14,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 05:41:14,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 05:41:14,692 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:14,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -367904156, now seen corresponding path program 1 times [2024-11-09 05:41:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:14,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587581482] [2024-11-09 05:41:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:14,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 05:41:15,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:15,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587581482] [2024-11-09 05:41:15,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587581482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:15,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598368082] [2024-11-09 05:41:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:15,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:15,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:15,088 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:15,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:41:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:15,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 05:41:15,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:41:15,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:41:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598368082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:41:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-09 05:41:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230000619] [2024-11-09 05:41:15,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:15,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:41:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:41:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:41:15,394 INFO L87 Difference]: Start difference. First operand 41833 states and 58223 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 05:41:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:17,814 INFO L93 Difference]: Finished difference Result 66597 states and 92154 transitions. [2024-11-09 05:41:17,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:41:17,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2024-11-09 05:41:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:17,952 INFO L225 Difference]: With dead ends: 66597 [2024-11-09 05:41:17,953 INFO L226 Difference]: Without dead ends: 46249 [2024-11-09 05:41:17,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:41:17,991 INFO L432 NwaCegarLoop]: 3275 mSDtfsCounter, 114 mSDsluCounter, 6415 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 9690 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:17,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 9690 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:41:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46249 states. [2024-11-09 05:41:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46249 to 43117. [2024-11-09 05:41:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43117 states, 37947 states have (on average 1.4182675837352097) internal successors, (53819), 38058 states have internal predecessors, (53819), 2994 states have call successors, (2994), 2174 states have call predecessors, (2994), 2174 states have return successors, (2994), 2885 states have call predecessors, (2994), 2994 states have call successors, (2994) [2024-11-09 05:41:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43117 states to 43117 states and 59807 transitions. [2024-11-09 05:41:20,866 INFO L78 Accepts]: Start accepts. Automaton has 43117 states and 59807 transitions. Word has length 141 [2024-11-09 05:41:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:20,866 INFO L471 AbstractCegarLoop]: Abstraction has 43117 states and 59807 transitions. [2024-11-09 05:41:20,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 05:41:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 43117 states and 59807 transitions. [2024-11-09 05:41:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 05:41:20,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:20,915 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:20,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:41:21,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 05:41:21,116 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:21,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1699899590, now seen corresponding path program 1 times [2024-11-09 05:41:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:21,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359083818] [2024-11-09 05:41:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:21,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 05:41:21,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:21,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359083818] [2024-11-09 05:41:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359083818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:21,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584806333] [2024-11-09 05:41:21,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:21,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:21,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:21,424 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:21,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:41:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:21,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:41:21,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:41:21,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:41:21,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584806333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:21,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:41:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 05:41:21,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707256483] [2024-11-09 05:41:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:21,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:21,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:41:21,659 INFO L87 Difference]: Start difference. First operand 43117 states and 59807 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:41:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:25,020 INFO L93 Difference]: Finished difference Result 98273 states and 135701 transitions. [2024-11-09 05:41:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 138 [2024-11-09 05:41:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:25,203 INFO L225 Difference]: With dead ends: 98273 [2024-11-09 05:41:25,203 INFO L226 Difference]: Without dead ends: 67229 [2024-11-09 05:41:25,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:41:25,245 INFO L432 NwaCegarLoop]: 3285 mSDtfsCounter, 96 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6482 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:25,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6482 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:41:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67229 states. [2024-11-09 05:41:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67229 to 60175. [2024-11-09 05:41:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60175 states, 53709 states have (on average 1.4205254240443874) internal successors, (76295), 53820 states have internal predecessors, (76295), 3642 states have call successors, (3642), 2822 states have call predecessors, (3642), 2822 states have return successors, (3642), 3533 states have call predecessors, (3642), 3642 states have call successors, (3642) [2024-11-09 05:41:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60175 states to 60175 states and 83579 transitions. [2024-11-09 05:41:28,640 INFO L78 Accepts]: Start accepts. Automaton has 60175 states and 83579 transitions. Word has length 138 [2024-11-09 05:41:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:28,640 INFO L471 AbstractCegarLoop]: Abstraction has 60175 states and 83579 transitions. [2024-11-09 05:41:28,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:41:28,641 INFO L276 IsEmpty]: Start isEmpty. Operand 60175 states and 83579 transitions. [2024-11-09 05:41:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-09 05:41:28,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:28,679 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:28,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 05:41:28,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 05:41:28,880 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:28,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1243278825, now seen corresponding path program 1 times [2024-11-09 05:41:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:28,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300609461] [2024-11-09 05:41:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:28,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 05:41:29,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300609461] [2024-11-09 05:41:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300609461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316829868] [2024-11-09 05:41:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:29,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:29,101 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:29,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7742df2-0d0d-4d19-8713-c79983612038/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:41:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:29,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:41:29,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 05:41:29,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:41:29,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316829868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:29,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:41:29,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 05:41:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601149935] [2024-11-09 05:41:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:29,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:41:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:41:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:41:29,412 INFO L87 Difference]: Start difference. First operand 60175 states and 83579 transitions. Second operand has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:41:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:34,152 INFO L93 Difference]: Finished difference Result 111256 states and 154106 transitions. [2024-11-09 05:41:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:41:34,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 140 [2024-11-09 05:41:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:34,284 INFO L225 Difference]: With dead ends: 111256 [2024-11-09 05:41:34,285 INFO L226 Difference]: Without dead ends: 63130 [2024-11-09 05:41:34,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:41:34,340 INFO L432 NwaCegarLoop]: 3143 mSDtfsCounter, 3474 mSDsluCounter, 6243 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 9386 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:34,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3485 Valid, 9386 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:41:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63130 states.