./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/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_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/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_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/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 257fbefed94a1e5b18da17b648f63b8a4a376ab6bd67ba2a090c30b5997c5667 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:12:33,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:12:33,837 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:12:33,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:12:33,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:12:33,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:12:33,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:12:33,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:12:33,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:12:33,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:12:33,866 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:12:33,867 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:12:33,868 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:12:33,868 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:12:33,868 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:12:33,869 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:12:33,870 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:12:33,870 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:12:33,871 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:12:33,871 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:12:33,872 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:12:33,872 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:12:33,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:12:33,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:12:33,874 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:12:33,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:12:33,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:12:33,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:12:33,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:12:33,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:12:33,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:12:33,878 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:12:33,878 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:12:33,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:12:33,879 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:12:33,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:12:33,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:12:33,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:12:33,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:12:33,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:12:33,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:12:33,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:12:33,884 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:12:33,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:12:33,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:12:33,885 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:12:33,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:12:33,886 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_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 257fbefed94a1e5b18da17b648f63b8a4a376ab6bd67ba2a090c30b5997c5667 [2024-11-09 01:12:34,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:12:34,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:12:34,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:12:34,236 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:12:34,237 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:12:34,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c Unable to find full path for "g++" [2024-11-09 01:12:36,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:12:37,198 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:12:37,199 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c [2024-11-09 01:12:37,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/data/64b7598c9/efb2dfc3105d414dab5912a2cc80af04/FLAGf30898f48 [2024-11-09 01:12:37,286 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/data/64b7598c9/efb2dfc3105d414dab5912a2cc80af04 [2024-11-09 01:12:37,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:12:37,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:12:37,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:12:37,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:12:37,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:12:37,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:12:37" (1/1) ... [2024-11-09 01:12:37,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58699d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:37, skipping insertion in model container [2024-11-09 01:12:37,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:12:37" (1/1) ... [2024-11-09 01:12:37,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:12:40,250 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_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[378560,378573] [2024-11-09 01:12:40,300 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_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[383339,383352] [2024-11-09 01:12:40,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:12:40,705 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:12:42,056 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_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[378560,378573] [2024-11-09 01:12:42,065 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_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[383339,383352] [2024-11-09 01:12:42,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:12:42,196 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:12:42,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42 WrapperNode [2024-11-09 01:12:42,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:12:42,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:12:42,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:12:42,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:12:42,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:42,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:42,971 INFO L138 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13164 [2024-11-09 01:12:42,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:12:42,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:12:42,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:12:42,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:12:42,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:42,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:12:43,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:12:43,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:12:43,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:12:43,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (1/1) ... [2024-11-09 01:12:43,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:12:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:12:43,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:12:43,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:12:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:12:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-09 01:12:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-09 01:12:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-09 01:12:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-09 01:12:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-09 01:12:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-09 01:12:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-09 01:12:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-09 01:12:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-09 01:12:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-09 01:12:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-09 01:12:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-09 01:12:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-09 01:12:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-09 01:12:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:12:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:12:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:12:43,832 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:12:43,835 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:12:55,759 INFO L? ?]: Removed 1753 outVars from TransFormulas that were not future-live. [2024-11-09 01:12:55,760 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:12:58,795 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:12:58,796 INFO L316 CfgBuilder]: Removed 15 assume(true) statements. [2024-11-09 01:12:58,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:12:58 BoogieIcfgContainer [2024-11-09 01:12:58,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:12:58,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:12:58,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:12:58,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:12:58,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:12:37" (1/3) ... [2024-11-09 01:12:58,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f82b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:12:58, skipping insertion in model container [2024-11-09 01:12:58,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:12:42" (2/3) ... [2024-11-09 01:12:58,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f82b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:12:58, skipping insertion in model container [2024-11-09 01:12:58,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:12:58" (3/3) ... [2024-11-09 01:12:58,807 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.11.cil-1.c [2024-11-09 01:12:58,829 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:12:58,829 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 01:12:58,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:12:58,960 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;@383a79f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:12:58,960 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 01:12:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 1838 states, 1801 states have (on average 1.951693503609106) internal successors, (3515), 1806 states have internal predecessors, (3515), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 01:12:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 01:12:58,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:12:58,989 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:12:58,990 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:12:58,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:12:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash -445343415, now seen corresponding path program 1 times [2024-11-09 01:12:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:12:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846684650] [2024-11-09 01:12:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:12:59,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:12:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:12:59,734 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 01:12:59,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:12:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846684650] [2024-11-09 01:12:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846684650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:12:59,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:12:59,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:12:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395903213] [2024-11-09 01:12:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:12:59,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:12:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:12:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:12:59,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:12:59,783 INFO L87 Difference]: Start difference. First operand has 1838 states, 1801 states have (on average 1.951693503609106) internal successors, (3515), 1806 states have internal predecessors, (3515), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:13:01,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:01,126 INFO L93 Difference]: Finished difference Result 3847 states and 7427 transitions. [2024-11-09 01:13:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:13:01,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2024-11-09 01:13:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:01,153 INFO L225 Difference]: With dead ends: 3847 [2024-11-09 01:13:01,153 INFO L226 Difference]: Without dead ends: 2008 [2024-11-09 01:13:01,164 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 01:13:01,169 INFO L432 NwaCegarLoop]: 3512 mSDtfsCounter, 3778 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 6928 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:01,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3778 Valid, 6928 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 01:13:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2024-11-09 01:13:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2007. [2024-11-09 01:13:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1945 states have (on average 1.9115681233933162) internal successors, (3718), 1949 states have internal predecessors, (3718), 48 states have call successors, (48), 13 states have call predecessors, (48), 12 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-09 01:13:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 3812 transitions. [2024-11-09 01:13:01,362 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 3812 transitions. Word has length 65 [2024-11-09 01:13:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:01,364 INFO L471 AbstractCegarLoop]: Abstraction has 2007 states and 3812 transitions. [2024-11-09 01:13:01,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:13:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 3812 transitions. [2024-11-09 01:13:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 01:13:01,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:01,376 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, 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, 1, 1, 1, 1] [2024-11-09 01:13:01,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:13:01,377 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:01,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1600243590, now seen corresponding path program 1 times [2024-11-09 01:13:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17605937] [2024-11-09 01:13:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:13:01,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:01,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17605937] [2024-11-09 01:13:01,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17605937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:01,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073052483] [2024-11-09 01:13:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:01,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:01,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:01,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:01,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:13:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:02,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:02,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 01:13:02,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:02,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073052483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:02,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:02,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 01:13:02,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363556914] [2024-11-09 01:13:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:02,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:13:02,157 INFO L87 Difference]: Start difference. First operand 2007 states and 3812 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:02,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:02,880 INFO L93 Difference]: Finished difference Result 2722 states and 4901 transitions. [2024-11-09 01:13:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:02,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2024-11-09 01:13:02,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:02,897 INFO L225 Difference]: With dead ends: 2722 [2024-11-09 01:13:02,898 INFO L226 Difference]: Without dead ends: 2361 [2024-11-09 01:13:02,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 01:13:02,902 INFO L432 NwaCegarLoop]: 3351 mSDtfsCounter, 3509 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:02,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 3580 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:13:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2024-11-09 01:13:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2355. [2024-11-09 01:13:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2241 states have (on average 1.853190539937528) internal successors, (4153), 2246 states have internal predecessors, (4153), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-09 01:13:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4327 transitions. [2024-11-09 01:13:03,008 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4327 transitions. Word has length 131 [2024-11-09 01:13:03,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:03,009 INFO L471 AbstractCegarLoop]: Abstraction has 2355 states and 4327 transitions. [2024-11-09 01:13:03,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4327 transitions. [2024-11-09 01:13:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 01:13:03,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:03,017 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, 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, 1, 1, 1, 1] [2024-11-09 01:13:03,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 01:13:03,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:03,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:03,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1439987012, now seen corresponding path program 1 times [2024-11-09 01:13:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:03,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011025118] [2024-11-09 01:13:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:03,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:13:03,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011025118] [2024-11-09 01:13:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011025118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:03,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494560491] [2024-11-09 01:13:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:03,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:03,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:03,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:03,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:13:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:03,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:03,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 01:13:03,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494560491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:03,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:03,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 01:13:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822670215] [2024-11-09 01:13:03,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:03,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:03,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:13:03,789 INFO L87 Difference]: Start difference. First operand 2355 states and 4327 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:04,493 INFO L93 Difference]: Finished difference Result 3760 states and 6462 transitions. [2024-11-09 01:13:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:04,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2024-11-09 01:13:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:04,513 INFO L225 Difference]: With dead ends: 3760 [2024-11-09 01:13:04,514 INFO L226 Difference]: Without dead ends: 3051 [2024-11-09 01:13:04,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 01:13:04,523 INFO L432 NwaCegarLoop]: 3331 mSDtfsCounter, 3527 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3560 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:04,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3560 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:13:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2024-11-09 01:13:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3043. [2024-11-09 01:13:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 2827 states have (on average 1.772550406791652) internal successors, (5011), 2834 states have internal predecessors, (5011), 166 states have call successors, (166), 49 states have call predecessors, (166), 48 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-09 01:13:04,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 5341 transitions. [2024-11-09 01:13:04,655 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 5341 transitions. Word has length 131 [2024-11-09 01:13:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:04,656 INFO L471 AbstractCegarLoop]: Abstraction has 3043 states and 5341 transitions. [2024-11-09 01:13:04,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 5341 transitions. [2024-11-09 01:13:04,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 01:13:04,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:04,661 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, 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, 1, 1, 1, 1] [2024-11-09 01:13:04,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 01:13:04,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:04,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:04,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash -474640258, now seen corresponding path program 1 times [2024-11-09 01:13:04,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:04,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895552451] [2024-11-09 01:13:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:04,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:13:05,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:05,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895552451] [2024-11-09 01:13:05,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895552451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:05,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164669994] [2024-11-09 01:13:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:05,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:05,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:05,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:05,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 01:13:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:05,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:05,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 01:13:05,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:05,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164669994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:05,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:05,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 01:13:05,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352745611] [2024-11-09 01:13:05,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:05,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:05,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:05,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:13:05,547 INFO L87 Difference]: Start difference. First operand 3043 states and 5341 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:06,364 INFO L93 Difference]: Finished difference Result 5812 states and 9534 transitions. [2024-11-09 01:13:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2024-11-09 01:13:06,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:06,394 INFO L225 Difference]: With dead ends: 5812 [2024-11-09 01:13:06,394 INFO L226 Difference]: Without dead ends: 4415 [2024-11-09 01:13:06,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 01:13:06,404 INFO L432 NwaCegarLoop]: 3311 mSDtfsCounter, 3521 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:06,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3521 Valid, 3540 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:13:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2024-11-09 01:13:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4403. [2024-11-09 01:13:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 3987 states have (on average 1.6812139453222974) internal successors, (6703), 3998 states have internal predecessors, (6703), 318 states have call successors, (318), 97 states have call predecessors, (318), 96 states have return successors, (316), 308 states have call predecessors, (316), 316 states have call successors, (316) [2024-11-09 01:13:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 7337 transitions. [2024-11-09 01:13:06,661 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 7337 transitions. Word has length 131 [2024-11-09 01:13:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:06,662 INFO L471 AbstractCegarLoop]: Abstraction has 4403 states and 7337 transitions. [2024-11-09 01:13:06,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 7337 transitions. [2024-11-09 01:13:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 01:13:06,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:06,677 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, 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, 1, 1, 1, 1] [2024-11-09 01:13:06,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 01:13:06,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:06,880 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:06,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2006945728, now seen corresponding path program 1 times [2024-11-09 01:13:06,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:06,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974702904] [2024-11-09 01:13:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:06,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:13:07,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974702904] [2024-11-09 01:13:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974702904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:07,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644951853] [2024-11-09 01:13:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:07,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:07,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:07,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 01:13:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:07,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:07,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 01:13:07,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:07,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644951853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:07,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 01:13:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748275967] [2024-11-09 01:13:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:07,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:13:07,460 INFO L87 Difference]: Start difference. First operand 4403 states and 7337 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:08,331 INFO L93 Difference]: Finished difference Result 9868 states and 15578 transitions. [2024-11-09 01:13:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:08,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2024-11-09 01:13:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:08,373 INFO L225 Difference]: With dead ends: 9868 [2024-11-09 01:13:08,373 INFO L226 Difference]: Without dead ends: 7111 [2024-11-09 01:13:08,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 01:13:08,389 INFO L432 NwaCegarLoop]: 3345 mSDtfsCounter, 3530 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3530 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:08,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3530 Valid, 3574 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:13:08,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7111 states. [2024-11-09 01:13:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7111 to 7091. [2024-11-09 01:13:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7091 states, 6283 states have (on average 1.5978035970077988) internal successors, (10039), 6302 states have internal predecessors, (10039), 614 states have call successors, (614), 193 states have call predecessors, (614), 192 states have return successors, (612), 596 states have call predecessors, (612), 612 states have call successors, (612) [2024-11-09 01:13:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7091 states to 7091 states and 11265 transitions. [2024-11-09 01:13:08,818 INFO L78 Accepts]: Start accepts. Automaton has 7091 states and 11265 transitions. Word has length 131 [2024-11-09 01:13:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:08,819 INFO L471 AbstractCegarLoop]: Abstraction has 7091 states and 11265 transitions. [2024-11-09 01:13:08,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7091 states and 11265 transitions. [2024-11-09 01:13:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 01:13:08,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:08,837 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, 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, 1, 1, 1, 1] [2024-11-09 01:13:08,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 01:13:09,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:09,039 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:09,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1551080126, now seen corresponding path program 1 times [2024-11-09 01:13:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:09,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79814263] [2024-11-09 01:13:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:13:09,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:09,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79814263] [2024-11-09 01:13:09,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79814263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059647837] [2024-11-09 01:13:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:09,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:09,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:09,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 01:13:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:09,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:09,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:13:09,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:09,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059647837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:09,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:09,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 01:13:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132982854] [2024-11-09 01:13:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:09,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:09,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:13:09,636 INFO L87 Difference]: Start difference. First operand 7091 states and 11265 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:10,655 INFO L93 Difference]: Finished difference Result 17884 states and 27466 transitions. [2024-11-09 01:13:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:10,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2024-11-09 01:13:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:10,743 INFO L225 Difference]: With dead ends: 17884 [2024-11-09 01:13:10,743 INFO L226 Difference]: Without dead ends: 12439 [2024-11-09 01:13:10,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 01:13:10,769 INFO L432 NwaCegarLoop]: 3293 mSDtfsCounter, 3503 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3503 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:10,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3503 Valid, 3522 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:13:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2024-11-09 01:13:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12403. [2024-11-09 01:13:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12403 states, 10827 states have (on average 1.534589452295188) internal successors, (16615), 10862 states have internal predecessors, (16615), 1190 states have call successors, (1190), 385 states have call predecessors, (1190), 384 states have return successors, (1188), 1156 states have call predecessors, (1188), 1188 states have call successors, (1188) [2024-11-09 01:13:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12403 states to 12403 states and 18993 transitions. [2024-11-09 01:13:11,295 INFO L78 Accepts]: Start accepts. Automaton has 12403 states and 18993 transitions. Word has length 131 [2024-11-09 01:13:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:11,296 INFO L471 AbstractCegarLoop]: Abstraction has 12403 states and 18993 transitions. [2024-11-09 01:13:11,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 12403 states and 18993 transitions. [2024-11-09 01:13:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 01:13:11,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:11,315 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, 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, 1, 1, 1, 1] [2024-11-09 01:13:11,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 01:13:11,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 01:13:11,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:11,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1510717824, now seen corresponding path program 1 times [2024-11-09 01:13:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:11,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375541810] [2024-11-09 01:13:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:13:11,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:11,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375541810] [2024-11-09 01:13:11,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375541810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:11,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378832483] [2024-11-09 01:13:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:11,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:11,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:11,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:11,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 01:13:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:11,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:11,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 01:13:12,007 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378832483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:12,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:12,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 01:13:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68576862] [2024-11-09 01:13:12,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:12,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:12,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:12,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:12,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:13:12,009 INFO L87 Difference]: Start difference. First operand 12403 states and 18993 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:13,269 INFO L93 Difference]: Finished difference Result 33724 states and 50842 transitions. [2024-11-09 01:13:13,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2024-11-09 01:13:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:13,370 INFO L225 Difference]: With dead ends: 33724 [2024-11-09 01:13:13,371 INFO L226 Difference]: Without dead ends: 22967 [2024-11-09 01:13:13,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 01:13:13,409 INFO L432 NwaCegarLoop]: 3293 mSDtfsCounter, 3515 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:13,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3515 Valid, 3522 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 01:13:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22967 states. [2024-11-09 01:13:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22967 to 22899. [2024-11-09 01:13:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22899 states, 19819 states have (on average 1.492254906907513) internal successors, (29575), 19886 states have internal predecessors, (29575), 2310 states have call successors, (2310), 769 states have call predecessors, (2310), 768 states have return successors, (2308), 2244 states have call predecessors, (2308), 2308 states have call successors, (2308) [2024-11-09 01:13:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22899 states to 22899 states and 34193 transitions. [2024-11-09 01:13:14,287 INFO L78 Accepts]: Start accepts. Automaton has 22899 states and 34193 transitions. Word has length 131 [2024-11-09 01:13:14,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:14,287 INFO L471 AbstractCegarLoop]: Abstraction has 22899 states and 34193 transitions. [2024-11-09 01:13:14,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 01:13:14,288 INFO L276 IsEmpty]: Start isEmpty. Operand 22899 states and 34193 transitions. [2024-11-09 01:13:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 01:13:14,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:14,323 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, 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, 1, 1, 1, 1] [2024-11-09 01:13:14,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 01:13:14,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:14,524 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:14,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -199794878, now seen corresponding path program 1 times [2024-11-09 01:13:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375049634] [2024-11-09 01:13:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 01:13:15,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375049634] [2024-11-09 01:13:15,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375049634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:15,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:13:15,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 01:13:15,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903522188] [2024-11-09 01:13:15,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:15,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:13:15,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:13:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:13:15,044 INFO L87 Difference]: Start difference. First operand 22899 states and 34193 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 01:13:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:17,463 INFO L93 Difference]: Finished difference Result 70011 states and 103191 transitions. [2024-11-09 01:13:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 01:13:17,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 131 [2024-11-09 01:13:17,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:17,681 INFO L225 Difference]: With dead ends: 70011 [2024-11-09 01:13:17,681 INFO L226 Difference]: Without dead ends: 48759 [2024-11-09 01:13:17,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-09 01:13:17,748 INFO L432 NwaCegarLoop]: 3301 mSDtfsCounter, 4095 mSDsluCounter, 6570 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4115 SdHoareTripleChecker+Valid, 9871 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:17,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4115 Valid, 9871 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 01:13:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48759 states. [2024-11-09 01:13:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48759 to 43379. [2024-11-09 01:13:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43379 states, 37355 states have (on average 1.4650515325926918) internal successors, (54727), 37486 states have internal predecessors, (54727), 4486 states have call successors, (4486), 1537 states have call predecessors, (4486), 1536 states have return successors, (4484), 4356 states have call predecessors, (4484), 4484 states have call successors, (4484) [2024-11-09 01:13:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43379 states to 43379 states and 63697 transitions. [2024-11-09 01:13:20,025 INFO L78 Accepts]: Start accepts. Automaton has 43379 states and 63697 transitions. Word has length 131 [2024-11-09 01:13:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:20,026 INFO L471 AbstractCegarLoop]: Abstraction has 43379 states and 63697 transitions. [2024-11-09 01:13:20,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 01:13:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 43379 states and 63697 transitions. [2024-11-09 01:13:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-09 01:13:20,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:20,113 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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 01:13:20,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 01:13:20,113 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:20,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash -576523062, now seen corresponding path program 1 times [2024-11-09 01:13:20,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:20,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009616714] [2024-11-09 01:13:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 01:13:20,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009616714] [2024-11-09 01:13:20,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009616714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120248015] [2024-11-09 01:13:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:20,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:20,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:20,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:20,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 01:13:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:20,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:20,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 01:13:20,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120248015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:20,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:20,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 01:13:20,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388238456] [2024-11-09 01:13:20,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:20,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:20,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:13:20,914 INFO L87 Difference]: Start difference. First operand 43379 states and 63697 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 01:13:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:23,978 INFO L93 Difference]: Finished difference Result 76471 states and 113044 transitions. [2024-11-09 01:13:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:23,979 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 153 [2024-11-09 01:13:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:24,251 INFO L225 Difference]: With dead ends: 76471 [2024-11-09 01:13:24,251 INFO L226 Difference]: Without dead ends: 55091 [2024-11-09 01:13:24,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 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 01:13:24,302 INFO L432 NwaCegarLoop]: 3426 mSDtfsCounter, 127 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:24,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 6730 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:13:24,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55091 states. [2024-11-09 01:13:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55091 to 52211. [2024-11-09 01:13:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52211 states, 45931 states have (on average 1.4896910583266203) internal successors, (68423), 46062 states have internal predecessors, (68423), 4614 states have call successors, (4614), 1665 states have call predecessors, (4614), 1664 states have return successors, (4612), 4484 states have call predecessors, (4612), 4612 states have call successors, (4612) [2024-11-09 01:13:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52211 states to 52211 states and 77649 transitions. [2024-11-09 01:13:26,435 INFO L78 Accepts]: Start accepts. Automaton has 52211 states and 77649 transitions. Word has length 153 [2024-11-09 01:13:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:26,437 INFO L471 AbstractCegarLoop]: Abstraction has 52211 states and 77649 transitions. [2024-11-09 01:13:26,437 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 01:13:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 52211 states and 77649 transitions. [2024-11-09 01:13:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-09 01:13:26,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:26,852 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:13:26,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 01:13:27,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:27,056 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:27,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash -627998877, now seen corresponding path program 1 times [2024-11-09 01:13:27,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:27,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165250038] [2024-11-09 01:13:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:27,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 01:13:27,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165250038] [2024-11-09 01:13:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165250038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861942899] [2024-11-09 01:13:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:27,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:27,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:27,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 01:13:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:27,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:27,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 01:13:28,196 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:28,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861942899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:28,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:28,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-09 01:13:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930031943] [2024-11-09 01:13:28,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:28,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:13:28,199 INFO L87 Difference]: Start difference. First operand 52211 states and 77649 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 01:13:31,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:31,841 INFO L93 Difference]: Finished difference Result 152572 states and 227802 transitions. [2024-11-09 01:13:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:31,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 201 [2024-11-09 01:13:31,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:32,355 INFO L225 Difference]: With dead ends: 152572 [2024-11-09 01:13:32,355 INFO L226 Difference]: Without dead ends: 102007 [2024-11-09 01:13:32,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 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 01:13:32,510 INFO L432 NwaCegarLoop]: 3293 mSDtfsCounter, 3457 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:32,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 3522 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:13:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102007 states. [2024-11-09 01:13:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102007 to 101619. [2024-11-09 01:13:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101619 states, 89323 states have (on average 1.4753534923815814) internal successors, (131783), 89582 states have internal predecessors, (131783), 8966 states have call successors, (8966), 3329 states have call predecessors, (8966), 3328 states have return successors, (8964), 8708 states have call predecessors, (8964), 8964 states have call successors, (8964) [2024-11-09 01:13:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101619 states to 101619 states and 149713 transitions. [2024-11-09 01:13:36,734 INFO L78 Accepts]: Start accepts. Automaton has 101619 states and 149713 transitions. Word has length 201 [2024-11-09 01:13:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:36,735 INFO L471 AbstractCegarLoop]: Abstraction has 101619 states and 149713 transitions. [2024-11-09 01:13:36,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 01:13:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 101619 states and 149713 transitions. [2024-11-09 01:13:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-09 01:13:37,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:37,327 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:13:37,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 01:13:37,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 01:13:37,528 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:37,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 354594443, now seen corresponding path program 1 times [2024-11-09 01:13:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462406603] [2024-11-09 01:13:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 01:13:37,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462406603] [2024-11-09 01:13:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462406603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:13:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370951090] [2024-11-09 01:13:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:37,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:13:37,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:37,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:13:37,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b76d97c-caa9-4311-b0ce-fb6acc8fd5f8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 01:13:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:38,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:13:38,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:13:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-09 01:13:38,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:13:38,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370951090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:38,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:13:38,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-09 01:13:38,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634769386] [2024-11-09 01:13:38,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:38,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:13:38,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:13:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:13:38,356 INFO L87 Difference]: Start difference. First operand 101619 states and 149713 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 01:13:44,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:44,943 INFO L93 Difference]: Finished difference Result 300028 states and 445146 transitions. [2024-11-09 01:13:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:13:44,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 201 [2024-11-09 01:13:44,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:45,919 INFO L225 Difference]: With dead ends: 300028 [2024-11-09 01:13:45,919 INFO L226 Difference]: Without dead ends: 200055 [2024-11-09 01:13:46,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 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 01:13:46,109 INFO L432 NwaCegarLoop]: 3293 mSDtfsCounter, 3457 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:46,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 3522 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:13:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200055 states.