./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E --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 f360dda009e25a73435ad605bf6b2f1b0f95e4925e3a6f627d3b33f05412514d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:57:30,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:57:30,536 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 02:57:30,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:57:30,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:57:30,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:57:30,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:57:30,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:57:30,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:57:30,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:57:30,593 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:57:30,593 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:57:30,593 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:57:30,593 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:57:30,593 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:57:30,594 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:57:30,594 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:57:30,594 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:57:30,594 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:57:30,594 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:57:30,594 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:57:30,594 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:57:30,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:57:30,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:57:30,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:57:30,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:57:30,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:57:30,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:57:30,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:57:30,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:57:30,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:57:30,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:57:30,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:57:30,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:57:30,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:57:30,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:57:30,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:57:30,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:57:30,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:57:30,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:57:30,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:57:30,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:57:30,601 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:57:30,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:57:30,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:57:30,602 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:57:30,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:57:30,602 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E 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 -> f360dda009e25a73435ad605bf6b2f1b0f95e4925e3a6f627d3b33f05412514d [2024-11-14 02:57:30,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:57:31,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:57:31,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:57:31,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:57:31,013 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:57:31,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c Unable to find full path for "g++" [2024-11-14 02:57:33,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:57:34,192 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:57:34,193 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c [2024-11-14 02:57:34,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/data/e2a544399/2a4fcca8a8f14677b49f26cf1a326f8d/FLAG226e1ce25 [2024-11-14 02:57:34,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/data/e2a544399/2a4fcca8a8f14677b49f26cf1a326f8d [2024-11-14 02:57:34,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:57:34,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:57:34,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:57:34,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:57:34,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:57:34,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:57:34" (1/1) ... [2024-11-14 02:57:34,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@daeb3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:34, skipping insertion in model container [2024-11-14 02:57:34,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:57:34" (1/1) ... [2024-11-14 02:57:34,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:57:36,854 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_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2024-11-14 02:57:36,907 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_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2024-11-14 02:57:37,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:57:37,264 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:57:38,632 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_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2024-11-14 02:57:38,643 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_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/sv-benchmarks/c/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2024-11-14 02:57:38,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:57:38,743 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:57:38,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38 WrapperNode [2024-11-14 02:57:38,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:57:38,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:57:38,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:57:38,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:57:38,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:38,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:39,532 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12745 [2024-11-14 02:57:39,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:57:39,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:57:39,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:57:39,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:57:39,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:39,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:39,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:39,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:39,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:40,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:40,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:40,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:40,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:57:40,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:57:40,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:57:40,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:57:40,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (1/1) ... [2024-11-14 02:57:40,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:57:40,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:57:40,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:57:40,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:57:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:57:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-14 02:57:40,308 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-14 02:57:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-14 02:57:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-14 02:57:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-14 02:57:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-14 02:57:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-14 02:57:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-14 02:57:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-14 02:57:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-14 02:57:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-14 02:57:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-14 02:57:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:57:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:57:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:57:40,504 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:57:40,508 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:57:54,776 INFO L? ?]: Removed 1707 outVars from TransFormulas that were not future-live. [2024-11-14 02:57:54,777 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:57:57,486 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:57:57,487 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-14 02:57:57,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:57:57 BoogieIcfgContainer [2024-11-14 02:57:57,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:57:57,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:57:57,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:57:57,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:57:57,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:57:34" (1/3) ... [2024-11-14 02:57:57,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8629c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:57:57, skipping insertion in model container [2024-11-14 02:57:57,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:57:38" (2/3) ... [2024-11-14 02:57:57,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8629c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:57:57, skipping insertion in model container [2024-11-14 02:57:57,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:57:57" (3/3) ... [2024-11-14 02:57:57,506 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.04.cil-1.c [2024-11-14 02:57:57,532 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:57:57,538 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label40+token_ring.04.cil-1.c that has 7 procedures, 1748 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2024-11-14 02:57:57,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:57:57,714 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;@c581646, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:57:57,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 02:57:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1721 states have (on average 1.9697850087158628) internal successors, (3390), 1724 states have internal predecessors, (3390), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-14 02:57:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 02:57:57,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:57:57,748 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] [2024-11-14 02:57:57,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:57:57,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:57:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1410823448, now seen corresponding path program 1 times [2024-11-14 02:57:57,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:57:57,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964489409] [2024-11-14 02:57:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:57:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:57:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:57:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:57:58,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:57:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964489409] [2024-11-14 02:57:58,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964489409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:57:58,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:57:58,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:57:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291152436] [2024-11-14 02:57:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:57:58,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:57:58,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:57:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:57:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:57:58,347 INFO L87 Difference]: Start difference. First operand has 1748 states, 1721 states have (on average 1.9697850087158628) internal successors, (3390), 1724 states have internal predecessors, (3390), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 02:57:59,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:57:59,638 INFO L93 Difference]: Finished difference Result 3584 states and 6994 transitions. [2024-11-14 02:57:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:57:59,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-11-14 02:57:59,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:57:59,670 INFO L225 Difference]: With dead ends: 3584 [2024-11-14 02:57:59,671 INFO L226 Difference]: Without dead ends: 1835 [2024-11-14 02:57:59,683 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 [2024-11-14 02:57:59,687 INFO L432 NwaCegarLoop]: 3281 mSDtfsCounter, 3525 mSDsluCounter, 3215 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3525 SdHoareTripleChecker+Valid, 6496 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:57:59,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3525 Valid, 6496 Invalid, 612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 02:57:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2024-11-14 02:57:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1834. [2024-11-14 02:57:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1788 states have (on average 1.9429530201342282) internal successors, (3474), 1791 states have internal predecessors, (3474), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-14 02:57:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 3538 transitions. [2024-11-14 02:57:59,910 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 3538 transitions. Word has length 43 [2024-11-14 02:57:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:57:59,911 INFO L471 AbstractCegarLoop]: Abstraction has 1834 states and 3538 transitions. [2024-11-14 02:57:59,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 02:57:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 3538 transitions. [2024-11-14 02:57:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 02:57:59,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:57:59,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:57:59,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:57:59,922 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:57:59,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:57:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1232804049, now seen corresponding path program 1 times [2024-11-14 02:57:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:57:59,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628537798] [2024-11-14 02:57:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:57:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:57:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 02:58:00,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628537798] [2024-11-14 02:58:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628537798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373168137] [2024-11-14 02:58:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:00,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:00,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:58:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:00,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:58:00,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 02:58:00,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:00,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373168137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:00,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:00,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-14 02:58:00,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121408401] [2024-11-14 02:58:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:00,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:00,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:00,599 INFO L87 Difference]: Start difference. First operand 1834 states and 3538 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 02:58:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:01,297 INFO L93 Difference]: Finished difference Result 2203 states and 4065 transitions. [2024-11-14 02:58:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:01,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2024-11-14 02:58:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:01,314 INFO L225 Difference]: With dead ends: 2203 [2024-11-14 02:58:01,314 INFO L226 Difference]: Without dead ends: 2015 [2024-11-14 02:58:01,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:01,319 INFO L432 NwaCegarLoop]: 3211 mSDtfsCounter, 3386 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:01,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 3321 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2024-11-14 02:58:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2011. [2024-11-14 02:58:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1927 states have (on average 1.9019200830306175) internal successors, (3665), 1931 states have internal predecessors, (3665), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-14 02:58:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 3781 transitions. [2024-11-14 02:58:01,435 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 3781 transitions. Word has length 81 [2024-11-14 02:58:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:01,438 INFO L471 AbstractCegarLoop]: Abstraction has 2011 states and 3781 transitions. [2024-11-14 02:58:01,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 02:58:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 3781 transitions. [2024-11-14 02:58:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 02:58:01,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:01,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:01,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:58:01,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:01,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:01,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:01,649 INFO L85 PathProgramCache]: Analyzing trace with hash -512710897, now seen corresponding path program 1 times [2024-11-14 02:58:01,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:01,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846503215] [2024-11-14 02:58:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:01,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 02:58:01,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846503215] [2024-11-14 02:58:01,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846503215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535345951] [2024-11-14 02:58:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:01,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:01,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:01,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:01,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 02:58:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:02,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:58:02,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 02:58:02,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:02,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535345951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:02,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:02,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-14 02:58:02,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658327684] [2024-11-14 02:58:02,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:02,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:02,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:02,203 INFO L87 Difference]: Start difference. First operand 2011 states and 3781 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 02:58:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:02,966 INFO L93 Difference]: Finished difference Result 2728 states and 4796 transitions. [2024-11-14 02:58:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:02,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2024-11-14 02:58:02,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:02,989 INFO L225 Difference]: With dead ends: 2728 [2024-11-14 02:58:02,989 INFO L226 Difference]: Without dead ends: 2363 [2024-11-14 02:58:02,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:02,994 INFO L432 NwaCegarLoop]: 3209 mSDtfsCounter, 3389 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3389 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:02,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3389 Valid, 3319 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2024-11-14 02:58:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2357. [2024-11-14 02:58:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2199 states have (on average 1.834924965893588) internal successors, (4035), 2205 states have internal predecessors, (4035), 108 states have call successors, (108), 48 states have call predecessors, (108), 48 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-14 02:58:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 4251 transitions. [2024-11-14 02:58:03,129 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 4251 transitions. Word has length 81 [2024-11-14 02:58:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:03,130 INFO L471 AbstractCegarLoop]: Abstraction has 2357 states and 4251 transitions. [2024-11-14 02:58:03,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 02:58:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 4251 transitions. [2024-11-14 02:58:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 02:58:03,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:03,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:03,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 02:58:03,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:03,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:03,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1579263185, now seen corresponding path program 1 times [2024-11-14 02:58:03,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:03,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121103139] [2024-11-14 02:58:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:03,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 02:58:03,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:03,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121103139] [2024-11-14 02:58:03,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121103139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:03,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:03,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:58:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681492697] [2024-11-14 02:58:03,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:03,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:03,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:03,540 INFO L87 Difference]: Start difference. First operand 2357 states and 4251 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:04,326 INFO L93 Difference]: Finished difference Result 2919 states and 5040 transitions. [2024-11-14 02:58:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:04,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2024-11-14 02:58:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:04,343 INFO L225 Difference]: With dead ends: 2919 [2024-11-14 02:58:04,344 INFO L226 Difference]: Without dead ends: 2553 [2024-11-14 02:58:04,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:04,348 INFO L432 NwaCegarLoop]: 3238 mSDtfsCounter, 59 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 6417 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:04,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6417 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:58:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2024-11-14 02:58:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2481. [2024-11-14 02:58:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2315 states have (on average 1.8207343412526997) internal successors, (4215), 2321 states have internal predecessors, (4215), 112 states have call successors, (112), 52 states have call predecessors, (112), 52 states have return successors, (112), 108 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-14 02:58:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 4439 transitions. [2024-11-14 02:58:04,492 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 4439 transitions. Word has length 81 [2024-11-14 02:58:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:04,494 INFO L471 AbstractCegarLoop]: Abstraction has 2481 states and 4439 transitions. [2024-11-14 02:58:04,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 4439 transitions. [2024-11-14 02:58:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 02:58:04,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:04,500 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:04,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 02:58:04,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:04,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash -629831834, now seen corresponding path program 1 times [2024-11-14 02:58:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:04,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721579732] [2024-11-14 02:58:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-14 02:58:04,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721579732] [2024-11-14 02:58:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721579732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:58:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972848954] [2024-11-14 02:58:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:04,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:04,615 INFO L87 Difference]: Start difference. First operand 2481 states and 4439 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 02:58:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:05,309 INFO L93 Difference]: Finished difference Result 4114 states and 6748 transitions. [2024-11-14 02:58:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 108 [2024-11-14 02:58:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:05,329 INFO L225 Difference]: With dead ends: 4114 [2024-11-14 02:58:05,330 INFO L226 Difference]: Without dead ends: 3279 [2024-11-14 02:58:05,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:05,336 INFO L432 NwaCegarLoop]: 3181 mSDtfsCounter, 3379 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:05,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3379 Valid, 3291 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:58:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2024-11-14 02:58:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3265. [2024-11-14 02:58:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 2947 states have (on average 1.7234475738038684) internal successors, (5079), 2957 states have internal predecessors, (5079), 212 states have call successors, (212), 104 states have call predecessors, (212), 104 states have return successors, (212), 204 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-14 02:58:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5503 transitions. [2024-11-14 02:58:05,743 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5503 transitions. Word has length 108 [2024-11-14 02:58:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:05,747 INFO L471 AbstractCegarLoop]: Abstraction has 3265 states and 5503 transitions. [2024-11-14 02:58:05,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 02:58:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5503 transitions. [2024-11-14 02:58:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 02:58:05,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:05,759 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:05,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 02:58:05,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:05,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash 57997085, now seen corresponding path program 1 times [2024-11-14 02:58:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:05,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817610296] [2024-11-14 02:58:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-14 02:58:05,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817610296] [2024-11-14 02:58:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817610296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:05,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:05,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:58:05,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088954349] [2024-11-14 02:58:05,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:05,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:05,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:05,919 INFO L87 Difference]: Start difference. First operand 3265 states and 5503 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 02:58:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:06,807 INFO L93 Difference]: Finished difference Result 6430 states and 9916 transitions. [2024-11-14 02:58:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:06,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 108 [2024-11-14 02:58:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:06,845 INFO L225 Difference]: With dead ends: 6430 [2024-11-14 02:58:06,845 INFO L226 Difference]: Without dead ends: 4811 [2024-11-14 02:58:06,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:06,856 INFO L432 NwaCegarLoop]: 3194 mSDtfsCounter, 3382 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:06,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3382 Valid, 3304 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2024-11-14 02:58:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4785. [2024-11-14 02:58:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4785 states, 4171 states have (on average 1.6128026852073842) internal successors, (6727), 4189 states have internal predecessors, (6727), 404 states have call successors, (404), 208 states have call predecessors, (404), 208 states have return successors, (404), 388 states have call predecessors, (404), 404 states have call successors, (404) [2024-11-14 02:58:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4785 states to 4785 states and 7535 transitions. [2024-11-14 02:58:07,236 INFO L78 Accepts]: Start accepts. Automaton has 4785 states and 7535 transitions. Word has length 108 [2024-11-14 02:58:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:07,236 INFO L471 AbstractCegarLoop]: Abstraction has 4785 states and 7535 transitions. [2024-11-14 02:58:07,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 02:58:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4785 states and 7535 transitions. [2024-11-14 02:58:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:07,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:07,258 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:07,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 02:58:07,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:07,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:07,259 INFO L85 PathProgramCache]: Analyzing trace with hash -367469933, now seen corresponding path program 1 times [2024-11-14 02:58:07,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:07,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700757081] [2024-11-14 02:58:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-14 02:58:07,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:07,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700757081] [2024-11-14 02:58:07,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700757081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:07,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739015420] [2024-11-14 02:58:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:07,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:07,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:07,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:07,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 02:58:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:07,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:58:07,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 02:58:07,823 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:07,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739015420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:07,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:07,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-14 02:58:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861952040] [2024-11-14 02:58:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:07,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:07,827 INFO L87 Difference]: Start difference. First operand 4785 states and 7535 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:08,868 INFO L93 Difference]: Finished difference Result 7421 states and 11217 transitions. [2024-11-14 02:58:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:08,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-14 02:58:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:08,913 INFO L225 Difference]: With dead ends: 7421 [2024-11-14 02:58:08,913 INFO L226 Difference]: Without dead ends: 5803 [2024-11-14 02:58:08,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:08,924 INFO L432 NwaCegarLoop]: 3234 mSDtfsCounter, 66 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 6412 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:08,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 6412 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:58:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2024-11-14 02:58:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5417. [2024-11-14 02:58:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5417 states, 4755 states have (on average 1.5997896950578339) internal successors, (7607), 4773 states have internal predecessors, (7607), 428 states have call successors, (428), 232 states have call predecessors, (428), 232 states have return successors, (428), 412 states have call predecessors, (428), 428 states have call successors, (428) [2024-11-14 02:58:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 8463 transitions. [2024-11-14 02:58:09,414 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 8463 transitions. Word has length 123 [2024-11-14 02:58:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:09,415 INFO L471 AbstractCegarLoop]: Abstraction has 5417 states and 8463 transitions. [2024-11-14 02:58:09,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 8463 transitions. [2024-11-14 02:58:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:09,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:09,433 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:09,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 02:58:09,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:09,634 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:09,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1626141202, now seen corresponding path program 1 times [2024-11-14 02:58:09,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:09,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438749729] [2024-11-14 02:58:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:09,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 02:58:09,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:09,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438749729] [2024-11-14 02:58:09,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438749729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:09,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64173150] [2024-11-14 02:58:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:09,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:09,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:09,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:09,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 02:58:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:10,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:58:10,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 02:58:10,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64173150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:10,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-14 02:58:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163201330] [2024-11-14 02:58:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:10,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:10,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:10,084 INFO L87 Difference]: Start difference. First operand 5417 states and 8463 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:10,909 INFO L93 Difference]: Finished difference Result 8681 states and 13037 transitions. [2024-11-14 02:58:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:10,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-14 02:58:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:10,976 INFO L225 Difference]: With dead ends: 8681 [2024-11-14 02:58:10,977 INFO L226 Difference]: Without dead ends: 6753 [2024-11-14 02:58:10,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:10,986 INFO L432 NwaCegarLoop]: 3251 mSDtfsCounter, 72 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:10,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 6431 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2024-11-14 02:58:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6311. [2024-11-14 02:58:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6311 states, 5577 states have (on average 1.5813161197776582) internal successors, (8819), 5595 states have internal predecessors, (8819), 464 states have call successors, (464), 268 states have call predecessors, (464), 268 states have return successors, (464), 448 states have call predecessors, (464), 464 states have call successors, (464) [2024-11-14 02:58:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 9747 transitions. [2024-11-14 02:58:11,306 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 9747 transitions. Word has length 123 [2024-11-14 02:58:11,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:11,306 INFO L471 AbstractCegarLoop]: Abstraction has 6311 states and 9747 transitions. [2024-11-14 02:58:11,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:11,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 9747 transitions. [2024-11-14 02:58:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:11,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:11,322 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:11,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:11,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 02:58:11,526 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:11,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 584807495, now seen corresponding path program 1 times [2024-11-14 02:58:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201085954] [2024-11-14 02:58:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-14 02:58:11,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201085954] [2024-11-14 02:58:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201085954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245421254] [2024-11-14 02:58:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:11,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:11,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:11,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:58:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:11,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:58:11,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 02:58:11,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245421254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:11,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-14 02:58:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943207863] [2024-11-14 02:58:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:11,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:11,964 INFO L87 Difference]: Start difference. First operand 6311 states and 9747 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:12,833 INFO L93 Difference]: Finished difference Result 10581 states and 15767 transitions. [2024-11-14 02:58:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:12,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-14 02:58:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:12,877 INFO L225 Difference]: With dead ends: 10581 [2024-11-14 02:58:12,878 INFO L226 Difference]: Without dead ends: 8170 [2024-11-14 02:58:12,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:12,889 INFO L432 NwaCegarLoop]: 3261 mSDtfsCounter, 84 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:12,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 6441 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:12,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8170 states. [2024-11-14 02:58:13,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8170 to 7616. [2024-11-14 02:58:13,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7616 states, 6774 states have (on average 1.559639799232359) internal successors, (10565), 6792 states have internal predecessors, (10565), 518 states have call successors, (518), 322 states have call predecessors, (518), 322 states have return successors, (518), 502 states have call predecessors, (518), 518 states have call successors, (518) [2024-11-14 02:58:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 11601 transitions. [2024-11-14 02:58:13,351 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 11601 transitions. Word has length 123 [2024-11-14 02:58:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:13,351 INFO L471 AbstractCegarLoop]: Abstraction has 7616 states and 11601 transitions. [2024-11-14 02:58:13,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 11601 transitions. [2024-11-14 02:58:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:13,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:13,373 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:13,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:13,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:13,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:13,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1676707788, now seen corresponding path program 1 times [2024-11-14 02:58:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466674069] [2024-11-14 02:58:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 02:58:13,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:13,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466674069] [2024-11-14 02:58:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466674069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:13,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432432495] [2024-11-14 02:58:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:13,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:13,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:13,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:13,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 02:58:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:13,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:58:13,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 02:58:14,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:14,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432432495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:14,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:14,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-14 02:58:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085835815] [2024-11-14 02:58:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:14,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:14,030 INFO L87 Difference]: Start difference. First operand 7616 states and 11601 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:14,978 INFO L93 Difference]: Finished difference Result 13000 states and 19160 transitions. [2024-11-14 02:58:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-14 02:58:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:15,025 INFO L225 Difference]: With dead ends: 13000 [2024-11-14 02:58:15,025 INFO L226 Difference]: Without dead ends: 9950 [2024-11-14 02:58:15,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:15,037 INFO L432 NwaCegarLoop]: 3256 mSDtfsCounter, 78 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:15,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 6436 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:58:15,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2024-11-14 02:58:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 9452. [2024-11-14 02:58:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9452 states, 8448 states have (on average 1.531841856060606) internal successors, (12941), 8466 states have internal predecessors, (12941), 599 states have call successors, (599), 403 states have call predecessors, (599), 403 states have return successors, (599), 583 states have call predecessors, (599), 599 states have call successors, (599) [2024-11-14 02:58:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9452 states to 9452 states and 14139 transitions. [2024-11-14 02:58:15,564 INFO L78 Accepts]: Start accepts. Automaton has 9452 states and 14139 transitions. Word has length 123 [2024-11-14 02:58:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:15,568 INFO L471 AbstractCegarLoop]: Abstraction has 9452 states and 14139 transitions. [2024-11-14 02:58:15,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 9452 states and 14139 transitions. [2024-11-14 02:58:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:15,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:15,594 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:15,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 02:58:15,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 02:58:15,795 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:15,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:15,796 INFO L85 PathProgramCache]: Analyzing trace with hash -831967189, now seen corresponding path program 2 times [2024-11-14 02:58:15,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:15,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230046658] [2024-11-14 02:58:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:15,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 02:58:16,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230046658] [2024-11-14 02:58:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230046658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882884560] [2024-11-14 02:58:16,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:58:16,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:16,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:16,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:16,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 02:58:16,276 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 02:58:16,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:58:16,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:58:16,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 02:58:16,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882884560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:16,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203482293] [2024-11-14 02:58:16,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:16,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:16,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:16,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:16,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:16,321 INFO L87 Difference]: Start difference. First operand 9452 states and 14139 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:17,308 INFO L93 Difference]: Finished difference Result 14410 states and 21197 transitions. [2024-11-14 02:58:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:17,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-14 02:58:17,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:17,355 INFO L225 Difference]: With dead ends: 14410 [2024-11-14 02:58:17,355 INFO L226 Difference]: Without dead ends: 9470 [2024-11-14 02:58:17,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:17,371 INFO L432 NwaCegarLoop]: 3262 mSDtfsCounter, 125 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 6430 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:17,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 6430 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:58:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2024-11-14 02:58:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 9322. [2024-11-14 02:58:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 8318 states have (on average 1.5187545082952634) internal successors, (12633), 8336 states have internal predecessors, (12633), 599 states have call successors, (599), 403 states have call predecessors, (599), 403 states have return successors, (599), 583 states have call predecessors, (599), 599 states have call successors, (599) [2024-11-14 02:58:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 13831 transitions. [2024-11-14 02:58:17,785 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 13831 transitions. Word has length 123 [2024-11-14 02:58:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:17,785 INFO L471 AbstractCegarLoop]: Abstraction has 9322 states and 13831 transitions. [2024-11-14 02:58:17,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 13831 transitions. [2024-11-14 02:58:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:17,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:17,810 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:17,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:18,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 02:58:18,012 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:18,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash -283941591, now seen corresponding path program 1 times [2024-11-14 02:58:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:18,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660186242] [2024-11-14 02:58:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 02:58:18,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660186242] [2024-11-14 02:58:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660186242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002865620] [2024-11-14 02:58:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:18,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:18,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:18,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:18,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 02:58:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:18,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:58:18,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 02:58:18,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002865620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:18,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:18,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730223251] [2024-11-14 02:58:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:18,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:18,485 INFO L87 Difference]: Start difference. First operand 9322 states and 13831 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:19,419 INFO L93 Difference]: Finished difference Result 14158 states and 20463 transitions. [2024-11-14 02:58:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:19,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-14 02:58:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:19,466 INFO L225 Difference]: With dead ends: 14158 [2024-11-14 02:58:19,467 INFO L226 Difference]: Without dead ends: 10036 [2024-11-14 02:58:19,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:19,480 INFO L432 NwaCegarLoop]: 3190 mSDtfsCounter, 3391 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3391 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:19,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3391 Valid, 3219 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:58:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2024-11-14 02:58:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 10036. [2024-11-14 02:58:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10036 states, 8940 states have (on average 1.4951901565995527) internal successors, (13367), 8958 states have internal predecessors, (13367), 629 states have call successors, (629), 465 states have call predecessors, (629), 465 states have return successors, (629), 613 states have call predecessors, (629), 629 states have call successors, (629) [2024-11-14 02:58:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 14625 transitions. [2024-11-14 02:58:20,181 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 14625 transitions. Word has length 123 [2024-11-14 02:58:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:20,182 INFO L471 AbstractCegarLoop]: Abstraction has 10036 states and 14625 transitions. [2024-11-14 02:58:20,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 14625 transitions. [2024-11-14 02:58:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:20,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:20,213 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:20,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 02:58:20,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 02:58:20,415 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:20,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1759452069, now seen corresponding path program 2 times [2024-11-14 02:58:20,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:20,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433199447] [2024-11-14 02:58:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:20,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 02:58:20,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:20,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433199447] [2024-11-14 02:58:20,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433199447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:20,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072915454] [2024-11-14 02:58:20,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:58:20,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:20,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:20,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:20,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 02:58:20,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 02:58:20,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:58:20,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:58:20,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 02:58:21,310 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072915454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:21,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-14 02:58:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489982953] [2024-11-14 02:58:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:21,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:58:21,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:58:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:58:21,312 INFO L87 Difference]: Start difference. First operand 10036 states and 14625 transitions. Second operand has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 02:58:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:23,178 INFO L93 Difference]: Finished difference Result 15729 states and 22375 transitions. [2024-11-14 02:58:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2024-11-14 02:58:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:23,225 INFO L225 Difference]: With dead ends: 15729 [2024-11-14 02:58:23,226 INFO L226 Difference]: Without dead ends: 10546 [2024-11-14 02:58:23,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:58:23,240 INFO L432 NwaCegarLoop]: 3132 mSDtfsCounter, 3508 mSDsluCounter, 6225 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 9357 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:23,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3518 Valid, 9357 Invalid, 953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 02:58:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2024-11-14 02:58:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 10398. [2024-11-14 02:58:23,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10398 states, 9258 states have (on average 1.48250162022035) internal successors, (13725), 9276 states have internal predecessors, (13725), 643 states have call successors, (643), 495 states have call predecessors, (643), 495 states have return successors, (643), 627 states have call predecessors, (643), 643 states have call successors, (643) [2024-11-14 02:58:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10398 states to 10398 states and 15011 transitions. [2024-11-14 02:58:23,824 INFO L78 Accepts]: Start accepts. Automaton has 10398 states and 15011 transitions. Word has length 123 [2024-11-14 02:58:23,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:23,825 INFO L471 AbstractCegarLoop]: Abstraction has 10398 states and 15011 transitions. [2024-11-14 02:58:23,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 02:58:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 10398 states and 15011 transitions. [2024-11-14 02:58:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:23,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:23,848 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:23,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:24,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 02:58:24,049 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:24,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash 990391337, now seen corresponding path program 2 times [2024-11-14 02:58:24,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:24,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027835286] [2024-11-14 02:58:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:24,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 02:58:24,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:24,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027835286] [2024-11-14 02:58:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027835286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:24,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722992223] [2024-11-14 02:58:24,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:58:24,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:24,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:24,326 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:24,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 02:58:24,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 02:58:24,488 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:58:24,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:58:24,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 02:58:24,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:24,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722992223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:24,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631518230] [2024-11-14 02:58:24,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:24,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:24,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:24,544 INFO L87 Difference]: Start difference. First operand 10398 states and 15011 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:25,595 INFO L93 Difference]: Finished difference Result 15994 states and 22717 transitions. [2024-11-14 02:58:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:25,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-14 02:58:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:25,630 INFO L225 Difference]: With dead ends: 15994 [2024-11-14 02:58:25,631 INFO L226 Difference]: Without dead ends: 10416 [2024-11-14 02:58:25,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:25,644 INFO L432 NwaCegarLoop]: 3272 mSDtfsCounter, 115 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:25,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 6438 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2024-11-14 02:58:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 10268. [2024-11-14 02:58:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10268 states, 9128 states have (on average 1.4663672217353199) internal successors, (13385), 9146 states have internal predecessors, (13385), 643 states have call successors, (643), 495 states have call predecessors, (643), 495 states have return successors, (643), 627 states have call predecessors, (643), 643 states have call successors, (643) [2024-11-14 02:58:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10268 states to 10268 states and 14671 transitions. [2024-11-14 02:58:26,072 INFO L78 Accepts]: Start accepts. Automaton has 10268 states and 14671 transitions. Word has length 123 [2024-11-14 02:58:26,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:26,073 INFO L471 AbstractCegarLoop]: Abstraction has 10268 states and 14671 transitions. [2024-11-14 02:58:26,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 10268 states and 14671 transitions. [2024-11-14 02:58:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 02:58:26,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:26,091 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:26,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:26,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 02:58:26,292 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:26,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1629518775, now seen corresponding path program 1 times [2024-11-14 02:58:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:26,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57035353] [2024-11-14 02:58:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:26,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 02:58:26,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:26,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57035353] [2024-11-14 02:58:26,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57035353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:26,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771721115] [2024-11-14 02:58:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:26,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:26,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:26,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:26,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 02:58:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:26,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:58:26,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 02:58:26,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:26,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771721115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:26,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:26,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340145538] [2024-11-14 02:58:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:26,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:26,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:26,746 INFO L87 Difference]: Start difference. First operand 10268 states and 14671 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:27,921 INFO L93 Difference]: Finished difference Result 23183 states and 32018 transitions. [2024-11-14 02:58:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-14 02:58:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:27,978 INFO L225 Difference]: With dead ends: 23183 [2024-11-14 02:58:27,978 INFO L226 Difference]: Without dead ends: 14562 [2024-11-14 02:58:28,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:28,001 INFO L432 NwaCegarLoop]: 3189 mSDtfsCounter, 61 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:28,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 6353 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14562 states. [2024-11-14 02:58:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14562 to 12085. [2024-11-14 02:58:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12085 states, 10779 states have (on average 1.457556359588088) internal successors, (15711), 10798 states have internal predecessors, (15711), 726 states have call successors, (726), 578 states have call predecessors, (726), 578 states have return successors, (726), 709 states have call predecessors, (726), 726 states have call successors, (726) [2024-11-14 02:58:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12085 states to 12085 states and 17163 transitions. [2024-11-14 02:58:28,779 INFO L78 Accepts]: Start accepts. Automaton has 12085 states and 17163 transitions. Word has length 123 [2024-11-14 02:58:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:28,780 INFO L471 AbstractCegarLoop]: Abstraction has 12085 states and 17163 transitions. [2024-11-14 02:58:28,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:58:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12085 states and 17163 transitions. [2024-11-14 02:58:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-14 02:58:28,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:28,800 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 02:58:28,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 02:58:29,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 02:58:29,001 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:29,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1375853801, now seen corresponding path program 1 times [2024-11-14 02:58:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:29,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328824188] [2024-11-14 02:58:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:29,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-14 02:58:29,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328824188] [2024-11-14 02:58:29,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328824188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830918122] [2024-11-14 02:58:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:29,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:29,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:29,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 02:58:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:29,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:58:29,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:58:29,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830918122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:29,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:29,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-14 02:58:29,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54190218] [2024-11-14 02:58:29,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:29,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:58:29,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:58:29,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:58:29,719 INFO L87 Difference]: Start difference. First operand 12085 states and 17163 transitions. Second operand has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 02:58:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:31,376 INFO L93 Difference]: Finished difference Result 18925 states and 26366 transitions. [2024-11-14 02:58:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 125 [2024-11-14 02:58:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:31,435 INFO L225 Difference]: With dead ends: 18925 [2024-11-14 02:58:31,435 INFO L226 Difference]: Without dead ends: 12473 [2024-11-14 02:58:31,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:58:31,454 INFO L432 NwaCegarLoop]: 3132 mSDtfsCounter, 3477 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3487 SdHoareTripleChecker+Valid, 6244 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:31,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3487 Valid, 6244 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 02:58:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12473 states. [2024-11-14 02:58:32,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12473 to 12441. [2024-11-14 02:58:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12441 states, 11095 states have (on average 1.445245606128887) internal successors, (16035), 11114 states have internal predecessors, (16035), 738 states have call successors, (738), 606 states have call predecessors, (738), 606 states have return successors, (738), 721 states have call predecessors, (738), 738 states have call successors, (738) [2024-11-14 02:58:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 17511 transitions. [2024-11-14 02:58:32,282 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 17511 transitions. Word has length 125 [2024-11-14 02:58:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:32,282 INFO L471 AbstractCegarLoop]: Abstraction has 12441 states and 17511 transitions. [2024-11-14 02:58:32,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 02:58:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 17511 transitions. [2024-11-14 02:58:32,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-14 02:58:32,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:32,302 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:32,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 02:58:32,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 02:58:32,507 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:32,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash -773858546, now seen corresponding path program 1 times [2024-11-14 02:58:32,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:32,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361843727] [2024-11-14 02:58:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-14 02:58:32,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:32,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361843727] [2024-11-14 02:58:32,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361843727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376511910] [2024-11-14 02:58:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:32,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:32,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:32,893 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:32,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 02:58:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:33,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 02:58:33,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-14 02:58:33,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:33,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376511910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-14 02:58:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793129856] [2024-11-14 02:58:33,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:33,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:58:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:58:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:58:33,269 INFO L87 Difference]: Start difference. First operand 12441 states and 17511 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:58:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:35,344 INFO L93 Difference]: Finished difference Result 19932 states and 27304 transitions. [2024-11-14 02:58:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:35,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2024-11-14 02:58:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:35,387 INFO L225 Difference]: With dead ends: 19932 [2024-11-14 02:58:35,387 INFO L226 Difference]: Without dead ends: 14474 [2024-11-14 02:58:35,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:58:35,401 INFO L432 NwaCegarLoop]: 3241 mSDtfsCounter, 97 mSDsluCounter, 9512 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 12753 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:35,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 12753 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 02:58:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14474 states. [2024-11-14 02:58:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14474 to 13560. [2024-11-14 02:58:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 11988 states have (on average 1.4276776776776776) internal successors, (17115), 12023 states have internal predecessors, (17115), 859 states have call successors, (859), 695 states have call predecessors, (859), 711 states have return successors, (891), 842 states have call predecessors, (891), 859 states have call successors, (891) [2024-11-14 02:58:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 18865 transitions. [2024-11-14 02:58:36,208 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 18865 transitions. Word has length 129 [2024-11-14 02:58:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:36,209 INFO L471 AbstractCegarLoop]: Abstraction has 13560 states and 18865 transitions. [2024-11-14 02:58:36,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:58:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 18865 transitions. [2024-11-14 02:58:36,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-14 02:58:36,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:36,228 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, 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] [2024-11-14 02:58:36,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 02:58:36,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 02:58:36,429 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:36,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:36,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1648666937, now seen corresponding path program 1 times [2024-11-14 02:58:36,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:36,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547718942] [2024-11-14 02:58:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:36,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 02:58:36,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:36,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547718942] [2024-11-14 02:58:36,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547718942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:36,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277655271] [2024-11-14 02:58:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:36,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:36,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:36,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:36,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 02:58:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:36,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:58:36,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:58:36,967 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:36,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277655271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:36,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:36,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-14 02:58:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828322311] [2024-11-14 02:58:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:36,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:58:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:58:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:58:36,970 INFO L87 Difference]: Start difference. First operand 13560 states and 18865 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-14 02:58:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:38,869 INFO L93 Difference]: Finished difference Result 23694 states and 32254 transitions. [2024-11-14 02:58:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 127 [2024-11-14 02:58:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:38,912 INFO L225 Difference]: With dead ends: 23694 [2024-11-14 02:58:38,912 INFO L226 Difference]: Without dead ends: 15024 [2024-11-14 02:58:38,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:58:38,923 INFO L432 NwaCegarLoop]: 3255 mSDtfsCounter, 110 mSDsluCounter, 6357 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 9612 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:38,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 9612 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 02:58:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15024 states. [2024-11-14 02:58:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15024 to 12820. [2024-11-14 02:58:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12820 states, 11202 states have (on average 1.4190323156579183) internal successors, (15896), 11249 states have internal predecessors, (15896), 890 states have call successors, (890), 694 states have call predecessors, (890), 726 states have return successors, (954), 877 states have call predecessors, (954), 890 states have call successors, (954) [2024-11-14 02:58:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12820 states to 12820 states and 17740 transitions. [2024-11-14 02:58:39,816 INFO L78 Accepts]: Start accepts. Automaton has 12820 states and 17740 transitions. Word has length 127 [2024-11-14 02:58:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:39,817 INFO L471 AbstractCegarLoop]: Abstraction has 12820 states and 17740 transitions. [2024-11-14 02:58:39,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-14 02:58:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 12820 states and 17740 transitions. [2024-11-14 02:58:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-14 02:58:39,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:39,835 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:39,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 02:58:40,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 02:58:40,036 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:40,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:40,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2127559273, now seen corresponding path program 1 times [2024-11-14 02:58:40,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:40,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575717470] [2024-11-14 02:58:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-14 02:58:40,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575717470] [2024-11-14 02:58:40,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575717470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343348778] [2024-11-14 02:58:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:40,307 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:40,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 02:58:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:40,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:58:40,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-14 02:58:40,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:40,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343348778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:40,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:40,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:40,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983941984] [2024-11-14 02:58:40,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:40,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:40,642 INFO L87 Difference]: Start difference. First operand 12820 states and 17740 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:42,475 INFO L93 Difference]: Finished difference Result 22718 states and 30687 transitions. [2024-11-14 02:58:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:42,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 159 [2024-11-14 02:58:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:42,516 INFO L225 Difference]: With dead ends: 22718 [2024-11-14 02:58:42,517 INFO L226 Difference]: Without dead ends: 13908 [2024-11-14 02:58:42,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:42,533 INFO L432 NwaCegarLoop]: 3193 mSDtfsCounter, 3360 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:42,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3360 Valid, 3227 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:58:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13908 states. [2024-11-14 02:58:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13908 to 13812. [2024-11-14 02:58:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13812 states, 12122 states have (on average 1.3882197657152284) internal successors, (16828), 12169 states have internal predecessors, (16828), 902 states have call successors, (902), 754 states have call predecessors, (902), 786 states have return successors, (1022), 889 states have call predecessors, (1022), 902 states have call successors, (1022) [2024-11-14 02:58:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13812 states to 13812 states and 18752 transitions. [2024-11-14 02:58:43,577 INFO L78 Accepts]: Start accepts. Automaton has 13812 states and 18752 transitions. Word has length 159 [2024-11-14 02:58:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:43,577 INFO L471 AbstractCegarLoop]: Abstraction has 13812 states and 18752 transitions. [2024-11-14 02:58:43,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 02:58:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 13812 states and 18752 transitions. [2024-11-14 02:58:43,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-14 02:58:43,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:43,595 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:43,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 02:58:43,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:43,796 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:43,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1381161126, now seen corresponding path program 1 times [2024-11-14 02:58:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324917602] [2024-11-14 02:58:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:43,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-14 02:58:44,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:44,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324917602] [2024-11-14 02:58:44,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324917602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:44,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248030488] [2024-11-14 02:58:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:44,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:44,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:44,045 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:44,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 02:58:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:44,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:58:44,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-14 02:58:44,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:44,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248030488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:44,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:44,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448203973] [2024-11-14 02:58:44,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:44,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:44,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:44,345 INFO L87 Difference]: Start difference. First operand 13812 states and 18752 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 02:58:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:45,598 INFO L93 Difference]: Finished difference Result 23188 states and 31109 transitions. [2024-11-14 02:58:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 159 [2024-11-14 02:58:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:45,629 INFO L225 Difference]: With dead ends: 23188 [2024-11-14 02:58:45,629 INFO L226 Difference]: Without dead ends: 13702 [2024-11-14 02:58:45,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:45,642 INFO L432 NwaCegarLoop]: 3267 mSDtfsCounter, 102 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 6422 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:45,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 6422 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13702 states. [2024-11-14 02:58:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13702 to 13516. [2024-11-14 02:58:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13516 states, 11826 states have (on average 1.366987992558769) internal successors, (16166), 11873 states have internal predecessors, (16166), 902 states have call successors, (902), 754 states have call predecessors, (902), 786 states have return successors, (1022), 889 states have call predecessors, (1022), 902 states have call successors, (1022) [2024-11-14 02:58:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 18090 transitions. [2024-11-14 02:58:46,615 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 18090 transitions. Word has length 159 [2024-11-14 02:58:46,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:46,615 INFO L471 AbstractCegarLoop]: Abstraction has 13516 states and 18090 transitions. [2024-11-14 02:58:46,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 02:58:46,616 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 18090 transitions. [2024-11-14 02:58:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-14 02:58:46,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:46,635 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:46,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 02:58:46,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:46,836 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:46,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1682779742, now seen corresponding path program 1 times [2024-11-14 02:58:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785989740] [2024-11-14 02:58:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-14 02:58:47,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785989740] [2024-11-14 02:58:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785989740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210654050] [2024-11-14 02:58:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:47,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:47,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:47,065 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:47,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 02:58:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:47,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:58:47,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 02:58:47,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:47,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210654050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:47,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:47,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-14 02:58:47,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446208002] [2024-11-14 02:58:47,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:47,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:58:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:58:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:58:47,433 INFO L87 Difference]: Start difference. First operand 13516 states and 18090 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-14 02:58:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:49,496 INFO L93 Difference]: Finished difference Result 28089 states and 36316 transitions. [2024-11-14 02:58:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 162 [2024-11-14 02:58:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:49,553 INFO L225 Difference]: With dead ends: 28089 [2024-11-14 02:58:49,553 INFO L226 Difference]: Without dead ends: 18975 [2024-11-14 02:58:49,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:58:49,573 INFO L432 NwaCegarLoop]: 3250 mSDtfsCounter, 105 mSDsluCounter, 6359 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 9609 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:49,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 9609 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 02:58:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18975 states. [2024-11-14 02:58:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18975 to 16904. [2024-11-14 02:58:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16904 states, 14566 states have (on average 1.3222573115474392) internal successors, (19260), 14605 states have internal predecessors, (19260), 1286 states have call successors, (1286), 1042 states have call predecessors, (1286), 1050 states have return successors, (1494), 1257 states have call predecessors, (1494), 1286 states have call successors, (1494) [2024-11-14 02:58:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16904 states to 16904 states and 22040 transitions. [2024-11-14 02:58:50,556 INFO L78 Accepts]: Start accepts. Automaton has 16904 states and 22040 transitions. Word has length 162 [2024-11-14 02:58:50,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:50,556 INFO L471 AbstractCegarLoop]: Abstraction has 16904 states and 22040 transitions. [2024-11-14 02:58:50,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-14 02:58:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16904 states and 22040 transitions. [2024-11-14 02:58:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-14 02:58:50,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:50,574 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:50,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 02:58:50,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 02:58:50,775 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:50,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1884091048, now seen corresponding path program 1 times [2024-11-14 02:58:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:50,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808275802] [2024-11-14 02:58:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 14 proven. 61 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-14 02:58:51,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:51,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808275802] [2024-11-14 02:58:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808275802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:51,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624785073] [2024-11-14 02:58:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:51,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:51,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:51,064 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:51,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 02:58:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:51,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:58:51,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-14 02:58:51,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:51,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624785073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:51,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:51,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777733255] [2024-11-14 02:58:51,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:51,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:51,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:51,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:51,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:51,513 INFO L87 Difference]: Start difference. First operand 16904 states and 22040 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 02:58:53,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:53,017 INFO L93 Difference]: Finished difference Result 27540 states and 35451 transitions. [2024-11-14 02:58:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:53,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 195 [2024-11-14 02:58:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:53,088 INFO L225 Difference]: With dead ends: 27540 [2024-11-14 02:58:53,088 INFO L226 Difference]: Without dead ends: 18784 [2024-11-14 02:58:53,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:53,111 INFO L432 NwaCegarLoop]: 3194 mSDtfsCounter, 3359 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:53,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 3228 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:58:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18784 states. [2024-11-14 02:58:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18784 to 18676. [2024-11-14 02:58:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18676 states, 16226 states have (on average 1.2902748674966105) internal successors, (20936), 16281 states have internal predecessors, (20936), 1286 states have call successors, (1286), 1122 states have call predecessors, (1286), 1162 states have return successors, (1602), 1273 states have call predecessors, (1602), 1286 states have call successors, (1602) [2024-11-14 02:58:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18676 states to 18676 states and 23824 transitions. [2024-11-14 02:58:54,336 INFO L78 Accepts]: Start accepts. Automaton has 18676 states and 23824 transitions. Word has length 195 [2024-11-14 02:58:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:54,336 INFO L471 AbstractCegarLoop]: Abstraction has 18676 states and 23824 transitions. [2024-11-14 02:58:54,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 02:58:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 18676 states and 23824 transitions. [2024-11-14 02:58:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-14 02:58:54,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:54,352 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:54,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 02:58:54,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:54,553 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:54,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash -255325818, now seen corresponding path program 1 times [2024-11-14 02:58:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:54,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991775272] [2024-11-14 02:58:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 14 proven. 65 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-14 02:58:54,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:54,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991775272] [2024-11-14 02:58:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991775272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806025216] [2024-11-14 02:58:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:54,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:54,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:54,822 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:54,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 02:58:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:55,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:58:55,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-14 02:58:55,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:55,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806025216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:55,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:55,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 02:58:55,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331180918] [2024-11-14 02:58:55,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:55,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:55,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:55,147 INFO L87 Difference]: Start difference. First operand 18676 states and 23824 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-14 02:58:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:56,884 INFO L93 Difference]: Finished difference Result 28676 states and 36570 transitions. [2024-11-14 02:58:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:56,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 195 [2024-11-14 02:58:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:56,961 INFO L225 Difference]: With dead ends: 28676 [2024-11-14 02:58:56,961 INFO L226 Difference]: Without dead ends: 18658 [2024-11-14 02:58:56,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:56,987 INFO L432 NwaCegarLoop]: 3265 mSDtfsCounter, 100 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:56,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6431 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:58:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18658 states. [2024-11-14 02:58:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18658 to 18504. [2024-11-14 02:58:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18504 states, 16054 states have (on average 1.2692163946679955) internal successors, (20376), 16109 states have internal predecessors, (20376), 1286 states have call successors, (1286), 1122 states have call predecessors, (1286), 1162 states have return successors, (1602), 1273 states have call predecessors, (1602), 1286 states have call successors, (1602) [2024-11-14 02:58:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18504 states to 18504 states and 23264 transitions. [2024-11-14 02:58:58,406 INFO L78 Accepts]: Start accepts. Automaton has 18504 states and 23264 transitions. Word has length 195 [2024-11-14 02:58:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:58,407 INFO L471 AbstractCegarLoop]: Abstraction has 18504 states and 23264 transitions. [2024-11-14 02:58:58,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-14 02:58:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 18504 states and 23264 transitions. [2024-11-14 02:58:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-14 02:58:58,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:58,422 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:58,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:58,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:58,623 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:58,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:58,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1201832456, now seen corresponding path program 1 times [2024-11-14 02:58:58,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:58,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335299824] [2024-11-14 02:58:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 14 proven. 65 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-14 02:58:58,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:58,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335299824] [2024-11-14 02:58:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335299824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606555075] [2024-11-14 02:58:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:58,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:58,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:58,877 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:58,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 02:58:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:59,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:58:59,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-14 02:58:59,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:59,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606555075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:59,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:59,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-14 02:58:59,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376473233] [2024-11-14 02:58:59,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:59,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:58:59,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:58:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:58:59,253 INFO L87 Difference]: Start difference. First operand 18504 states and 23264 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 02:59:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:01,691 INFO L93 Difference]: Finished difference Result 34733 states and 42621 transitions. [2024-11-14 02:59:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:59:01,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 199 [2024-11-14 02:59:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:01,752 INFO L225 Difference]: With dead ends: 34733 [2024-11-14 02:59:01,752 INFO L226 Difference]: Without dead ends: 24999 [2024-11-14 02:59:01,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:59:01,773 INFO L432 NwaCegarLoop]: 3247 mSDtfsCounter, 102 mSDsluCounter, 6363 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 9610 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:01,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 9610 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 02:59:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24999 states. [2024-11-14 02:59:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24999 to 23356. [2024-11-14 02:59:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23356 states, 20070 states have (on average 1.2326856003986049) internal successors, (24740), 20123 states have internal predecessors, (24740), 1750 states have call successors, (1750), 1506 states have call predecessors, (1750), 1534 states have return successors, (2254), 1727 states have call predecessors, (2254), 1750 states have call successors, (2254) [2024-11-14 02:59:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23356 states to 23356 states and 28744 transitions. [2024-11-14 02:59:03,412 INFO L78 Accepts]: Start accepts. Automaton has 23356 states and 28744 transitions. Word has length 199 [2024-11-14 02:59:03,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:03,412 INFO L471 AbstractCegarLoop]: Abstraction has 23356 states and 28744 transitions. [2024-11-14 02:59:03,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 02:59:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 23356 states and 28744 transitions. [2024-11-14 02:59:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-14 02:59:03,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:03,433 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:03,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-14 02:59:03,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:03,634 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:03,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1228035814, now seen corresponding path program 1 times [2024-11-14 02:59:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143708353] [2024-11-14 02:59:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:03,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 18 proven. 102 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-14 02:59:04,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143708353] [2024-11-14 02:59:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143708353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:59:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146713153] [2024-11-14 02:59:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:04,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:04,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:59:04,075 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:59:04,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 02:59:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:04,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 02:59:04,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:59:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-14 02:59:04,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:59:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146713153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:04,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:59:04,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-14 02:59:04,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191100720] [2024-11-14 02:59:04,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:04,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:59:04,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:59:04,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:59:04,637 INFO L87 Difference]: Start difference. First operand 23356 states and 28744 transitions. Second operand has 6 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:59:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:06,920 INFO L93 Difference]: Finished difference Result 36827 states and 44528 transitions. [2024-11-14 02:59:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:59:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 207 [2024-11-14 02:59:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:06,969 INFO L225 Difference]: With dead ends: 36827 [2024-11-14 02:59:06,969 INFO L226 Difference]: Without dead ends: 18903 [2024-11-14 02:59:06,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-14 02:59:06,995 INFO L432 NwaCegarLoop]: 3132 mSDtfsCounter, 3471 mSDsluCounter, 9334 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 12466 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:06,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 12466 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 02:59:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2024-11-14 02:59:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18205. [2024-11-14 02:59:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18205 states, 15587 states have (on average 1.2484121383203952) internal successors, (19459), 15654 states have internal predecessors, (19459), 1392 states have call successors, (1392), 1160 states have call predecessors, (1392), 1224 states have return successors, (1696), 1391 states have call predecessors, (1696), 1392 states have call successors, (1696) [2024-11-14 02:59:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18205 states to 18205 states and 22547 transitions. [2024-11-14 02:59:08,728 INFO L78 Accepts]: Start accepts. Automaton has 18205 states and 22547 transitions. Word has length 207 [2024-11-14 02:59:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:08,729 INFO L471 AbstractCegarLoop]: Abstraction has 18205 states and 22547 transitions. [2024-11-14 02:59:08,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:59:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 18205 states and 22547 transitions. [2024-11-14 02:59:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-14 02:59:08,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:08,754 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:08,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-14 02:59:08,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-14 02:59:08,954 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:08,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:08,955 INFO L85 PathProgramCache]: Analyzing trace with hash -966823627, now seen corresponding path program 1 times [2024-11-14 02:59:08,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:08,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011319381] [2024-11-14 02:59:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-14 02:59:09,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011319381] [2024-11-14 02:59:09,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011319381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:09,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:09,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:59:09,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548418740] [2024-11-14 02:59:09,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:09,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:59:09,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:59:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:59:09,460 INFO L87 Difference]: Start difference. First operand 18205 states and 22547 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-14 02:59:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:17,484 INFO L93 Difference]: Finished difference Result 81140 states and 96565 transitions. [2024-11-14 02:59:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:59:17,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 237 [2024-11-14 02:59:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:17,650 INFO L225 Difference]: With dead ends: 81140 [2024-11-14 02:59:17,650 INFO L226 Difference]: Without dead ends: 75352 [2024-11-14 02:59:17,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:59:17,669 INFO L432 NwaCegarLoop]: 3581 mSDtfsCounter, 3837 mSDsluCounter, 13799 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3837 SdHoareTripleChecker+Valid, 17380 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:17,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3837 Valid, 17380 Invalid, 2174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 02:59:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75352 states. [2024-11-14 02:59:23,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75352 to 49334. [2024-11-14 02:59:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49334 states, 41751 states have (on average 1.204450192809753) internal successors, (50287), 41948 states have internal predecessors, (50287), 4036 states have call successors, (4036), 3326 states have call predecessors, (4036), 3545 states have return successors, (4956), 4060 states have call predecessors, (4956), 4036 states have call successors, (4956) [2024-11-14 02:59:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49334 states to 49334 states and 59279 transitions. [2024-11-14 02:59:23,985 INFO L78 Accepts]: Start accepts. Automaton has 49334 states and 59279 transitions. Word has length 237 [2024-11-14 02:59:23,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:23,986 INFO L471 AbstractCegarLoop]: Abstraction has 49334 states and 59279 transitions. [2024-11-14 02:59:23,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-14 02:59:23,986 INFO L276 IsEmpty]: Start isEmpty. Operand 49334 states and 59279 transitions. [2024-11-14 02:59:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-14 02:59:24,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:24,041 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:24,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-14 02:59:24,041 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2105657003, now seen corresponding path program 1 times [2024-11-14 02:59:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18869994] [2024-11-14 02:59:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 18 proven. 137 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-14 02:59:24,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18869994] [2024-11-14 02:59:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18869994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:59:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540365363] [2024-11-14 02:59:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:24,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:24,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:59:24,757 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:59:24,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 02:59:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:25,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 02:59:25,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:59:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-14 02:59:25,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:59:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 68 proven. 44 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-14 02:59:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540365363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:59:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [945124724] [2024-11-14 02:59:26,172 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2024-11-14 02:59:26,173 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:59:26,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:59:26,183 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:59:26,184 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:59:47,557 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 160 for LOIs [2024-11-14 02:59:47,685 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 151 for LOIs [2024-11-14 02:59:47,770 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2024-11-14 02:59:47,771 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2024-11-14 02:59:47,777 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 1 for LOIs [2024-11-14 02:59:47,814 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2024-11-14 02:59:47,966 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:59:59,905 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '997291#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1) (exists ((|v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| Int)) (and (not (= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| 0)) (<= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| 2147483648)))))' at error location [2024-11-14 02:59:59,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:59:59,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:59:59,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 12] total 21 [2024-11-14 02:59:59,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329114749] [2024-11-14 02:59:59,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:59:59,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 02:59:59,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 02:59:59,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=6441, Unknown=0, NotChecked=0, Total=6806 [2024-11-14 02:59:59,912 INFO L87 Difference]: Start difference. First operand 49334 states and 59279 transitions. Second operand has 21 states, 15 states have (on average 16.866666666666667) internal successors, (253), 17 states have internal predecessors, (253), 11 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (47), 11 states have call predecessors, (47), 11 states have call successors, (47) [2024-11-14 03:00:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:09,772 INFO L93 Difference]: Finished difference Result 96440 states and 114217 transitions. [2024-11-14 03:00:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-14 03:00:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 16.866666666666667) internal successors, (253), 17 states have internal predecessors, (253), 11 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (47), 11 states have call predecessors, (47), 11 states have call successors, (47) Word has length 244 [2024-11-14 03:00:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:09,903 INFO L225 Difference]: With dead ends: 96440 [2024-11-14 03:00:09,903 INFO L226 Difference]: Without dead ends: 48753 [2024-11-14 03:00:09,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 641 SyntacticMatches, 35 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4108 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=1129, Invalid=12913, Unknown=0, NotChecked=0, Total=14042 [2024-11-14 03:00:09,961 INFO L432 NwaCegarLoop]: 3149 mSDtfsCounter, 11576 mSDsluCounter, 25028 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11576 SdHoareTripleChecker+Valid, 28177 SdHoareTripleChecker+Invalid, 3826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:09,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11576 Valid, 28177 Invalid, 3826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [448 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-14 03:00:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48753 states. [2024-11-14 03:00:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48753 to 37966. [2024-11-14 03:00:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37966 states, 31816 states have (on average 1.197699270807141) internal successors, (38106), 32051 states have internal predecessors, (38106), 3375 states have call successors, (3375), 2617 states have call predecessors, (3375), 2773 states have return successors, (3619), 3298 states have call predecessors, (3619), 3375 states have call successors, (3619) [2024-11-14 03:00:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37966 states to 37966 states and 45100 transitions. [2024-11-14 03:00:14,327 INFO L78 Accepts]: Start accepts. Automaton has 37966 states and 45100 transitions. Word has length 244 [2024-11-14 03:00:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:14,328 INFO L471 AbstractCegarLoop]: Abstraction has 37966 states and 45100 transitions. [2024-11-14 03:00:14,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 16.866666666666667) internal successors, (253), 17 states have internal predecessors, (253), 11 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (47), 11 states have call predecessors, (47), 11 states have call successors, (47) [2024-11-14 03:00:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 37966 states and 45100 transitions. [2024-11-14 03:00:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-14 03:00:14,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:14,500 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:14,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 03:00:14,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 03:00:14,702 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:00:14,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1934623266, now seen corresponding path program 1 times [2024-11-14 03:00:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:14,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920512215] [2024-11-14 03:00:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 42 proven. 96 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-11-14 03:00:15,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920512215] [2024-11-14 03:00:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920512215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:00:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029934182] [2024-11-14 03:00:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:15,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:15,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:00:15,630 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:00:15,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 03:00:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:16,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:00:16,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:00:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 03:00:16,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:00:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029934182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:16,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:00:16,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-14 03:00:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020445355] [2024-11-14 03:00:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:00:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:00:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:00:16,125 INFO L87 Difference]: Start difference. First operand 37966 states and 45100 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:00:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:22,436 INFO L93 Difference]: Finished difference Result 79809 states and 93246 transitions. [2024-11-14 03:00:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:00:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 276 [2024-11-14 03:00:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:22,565 INFO L225 Difference]: With dead ends: 79809 [2024-11-14 03:00:22,565 INFO L226 Difference]: Without dead ends: 43490 [2024-11-14 03:00:22,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:00:22,608 INFO L432 NwaCegarLoop]: 3270 mSDtfsCounter, 3377 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 6651 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:22,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3377 Valid, 6651 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:00:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43490 states. [2024-11-14 03:00:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43490 to 42817. [2024-11-14 03:00:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42817 states, 35867 states have (on average 1.1823403128223715) internal successors, (42407), 36123 states have internal predecessors, (42407), 3815 states have call successors, (3815), 2977 states have call predecessors, (3815), 3133 states have return successors, (4059), 3717 states have call predecessors, (4059), 3815 states have call successors, (4059) [2024-11-14 03:00:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42817 states to 42817 states and 50281 transitions. [2024-11-14 03:00:29,825 INFO L78 Accepts]: Start accepts. Automaton has 42817 states and 50281 transitions. Word has length 276 [2024-11-14 03:00:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:29,825 INFO L471 AbstractCegarLoop]: Abstraction has 42817 states and 50281 transitions. [2024-11-14 03:00:29,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:00:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 42817 states and 50281 transitions. [2024-11-14 03:00:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-14 03:00:29,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:29,859 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:29,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-14 03:00:30,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 03:00:30,060 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:00:30,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash -365106402, now seen corresponding path program 1 times [2024-11-14 03:00:30,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:30,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277006989] [2024-11-14 03:00:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 44 proven. 96 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-14 03:00:30,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:30,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277006989] [2024-11-14 03:00:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277006989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:00:30,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758775826] [2024-11-14 03:00:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:30,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:30,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:00:30,321 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:00:30,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 03:00:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:30,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:00:30,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:00:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-14 03:00:30,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:00:30,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758775826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:30,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:00:30,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-14 03:00:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418114929] [2024-11-14 03:00:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:30,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:00:30,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:00:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:00:30,609 INFO L87 Difference]: Start difference. First operand 42817 states and 50281 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:00:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:36,126 INFO L93 Difference]: Finished difference Result 94258 states and 108916 transitions. [2024-11-14 03:00:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:00:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 278 [2024-11-14 03:00:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:36,274 INFO L225 Difference]: With dead ends: 94258 [2024-11-14 03:00:36,274 INFO L226 Difference]: Without dead ends: 53088 [2024-11-14 03:00:36,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:00:36,328 INFO L432 NwaCegarLoop]: 3276 mSDtfsCounter, 3382 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 6663 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:36,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3382 Valid, 6663 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:00:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53088 states. [2024-11-14 03:00:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53088 to 52357. [2024-11-14 03:00:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52357 states, 43799 states have (on average 1.1659855247836708) internal successors, (51069), 44097 states have internal predecessors, (51069), 4699 states have call successors, (4699), 3701 states have call predecessors, (4699), 3857 states have return successors, (4943), 4559 states have call predecessors, (4943), 4699 states have call successors, (4943) [2024-11-14 03:00:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52357 states to 52357 states and 60711 transitions. [2024-11-14 03:00:44,451 INFO L78 Accepts]: Start accepts. Automaton has 52357 states and 60711 transitions. Word has length 278 [2024-11-14 03:00:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:44,456 INFO L471 AbstractCegarLoop]: Abstraction has 52357 states and 60711 transitions. [2024-11-14 03:00:44,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:00:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 52357 states and 60711 transitions. [2024-11-14 03:00:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-14 03:00:44,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:44,936 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:44,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-14 03:00:45,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 03:00:45,140 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:00:45,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2143765218, now seen corresponding path program 1 times [2024-11-14 03:00:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781822479] [2024-11-14 03:00:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 46 proven. 96 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-14 03:00:45,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781822479] [2024-11-14 03:00:45,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781822479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:00:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150213509] [2024-11-14 03:00:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:00:45,455 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:00:45,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 03:00:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:45,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:00:45,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:00:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-14 03:00:45,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:00:45,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150213509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:45,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:00:45,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-14 03:00:45,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956551531] [2024-11-14 03:00:45,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:45,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:00:45,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:45,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:00:45,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:00:45,892 INFO L87 Difference]: Start difference. First operand 52357 states and 60711 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 03:00:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:48,861 INFO L93 Difference]: Finished difference Result 61079 states and 70222 transitions. [2024-11-14 03:00:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:00:48,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 280 [2024-11-14 03:00:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:48,907 INFO L225 Difference]: With dead ends: 61079 [2024-11-14 03:00:48,907 INFO L226 Difference]: Without dead ends: 1642 [2024-11-14 03:00:48,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:00:48,968 INFO L432 NwaCegarLoop]: 3231 mSDtfsCounter, 99 mSDsluCounter, 6340 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 9571 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:48,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 9571 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:00:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-14 03:00:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-14 03:00:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 1.9914686166971358) internal successors, (3268), 1641 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:00:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 3268 transitions. [2024-11-14 03:00:49,029 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 3268 transitions. Word has length 280 [2024-11-14 03:00:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:49,029 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 3268 transitions. [2024-11-14 03:00:49,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 03:00:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 3268 transitions. [2024-11-14 03:00:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2024-11-14 03:00:49,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:49,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:49,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 03:00:49,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4866b444-5ff7-4ab7-bfb1-0036df66bbc0/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:49,258 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:00:49,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash -488575632, now seen corresponding path program 1 times [2024-11-14 03:00:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346729132] [2024-11-14 03:00:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:51,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346729132] [2024-11-14 03:00:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346729132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:51,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:51,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:00:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014259329] [2024-11-14 03:00:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:51,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:00:51,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:00:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:00:51,396 INFO L87 Difference]: Start difference. First operand 1642 states and 3268 transitions. Second operand has 3 states, 3 states have (on average 544.0) internal successors, (1632), 2 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:01,174 INFO L93 Difference]: Finished difference Result 4920 states and 9799 transitions. [2024-11-14 03:01:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:01:01,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 544.0) internal successors, (1632), 2 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1632 [2024-11-14 03:01:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:01,214 INFO L225 Difference]: With dead ends: 4920 [2024-11-14 03:01:01,214 INFO L226 Difference]: Without dead ends: 3280 [2024-11-14 03:01:01,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:01,217 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 219 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4739 mSolverCounterSat, 2448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2448 IncrementalHoareTripleChecker+Valid, 4739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:01,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 539 Invalid, 7187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2448 Valid, 4739 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-14 03:01:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2024-11-14 03:01:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3280. [2024-11-14 03:01:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3280 states, 3279 states have (on average 1.8109179627935346) internal successors, (5938), 3279 states have internal predecessors, (5938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 5938 transitions. [2024-11-14 03:01:01,314 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 5938 transitions. Word has length 1632 [2024-11-14 03:01:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:01,317 INFO L471 AbstractCegarLoop]: Abstraction has 3280 states and 5938 transitions. [2024-11-14 03:01:01,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 544.0) internal successors, (1632), 2 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 5938 transitions. [2024-11-14 03:01:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2024-11-14 03:01:01,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:01,361 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:01,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-14 03:01:01,361 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:01,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 945584796, now seen corresponding path program 1 times [2024-11-14 03:01:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948092596] [2024-11-14 03:01:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:01:02,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:02,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948092596] [2024-11-14 03:01:02,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948092596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:02,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:02,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:01:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014137627] [2024-11-14 03:01:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:02,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:01:02,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:01:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:02,873 INFO L87 Difference]: Start difference. First operand 3280 states and 5938 transitions. Second operand has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:12,521 INFO L93 Difference]: Finished difference Result 9834 states and 17809 transitions. [2024-11-14 03:01:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:01:12,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1641 [2024-11-14 03:01:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:12,559 INFO L225 Difference]: With dead ends: 9834 [2024-11-14 03:01:12,559 INFO L226 Difference]: Without dead ends: 6556 [2024-11-14 03:01:12,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:12,563 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 2787 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4651 mSolverCounterSat, 2009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2787 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 6660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2009 IncrementalHoareTripleChecker+Valid, 4651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:12,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2787 Valid, 330 Invalid, 6660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2009 Valid, 4651 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-11-14 03:01:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2024-11-14 03:01:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 6556. [2024-11-14 03:01:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6556 states, 6555 states have (on average 1.6987032799389779) internal successors, (11135), 6555 states have internal predecessors, (11135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6556 states to 6556 states and 11135 transitions. [2024-11-14 03:01:12,733 INFO L78 Accepts]: Start accepts. Automaton has 6556 states and 11135 transitions. Word has length 1641 [2024-11-14 03:01:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:12,733 INFO L471 AbstractCegarLoop]: Abstraction has 6556 states and 11135 transitions. [2024-11-14 03:01:12,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6556 states and 11135 transitions. [2024-11-14 03:01:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2024-11-14 03:01:12,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:12,758 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:12,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-14 03:01:12,758 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:12,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1506487420, now seen corresponding path program 1 times [2024-11-14 03:01:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626156473] [2024-11-14 03:01:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:12,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:01:14,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:14,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626156473] [2024-11-14 03:01:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626156473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:14,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:14,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:01:14,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897768911] [2024-11-14 03:01:14,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:14,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:01:14,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:01:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:14,190 INFO L87 Difference]: Start difference. First operand 6556 states and 11135 transitions. Second operand has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 2 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:23,269 INFO L93 Difference]: Finished difference Result 19662 states and 33400 transitions. [2024-11-14 03:01:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:01:23,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 2 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1721 [2024-11-14 03:01:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:23,314 INFO L225 Difference]: With dead ends: 19662 [2024-11-14 03:01:23,314 INFO L226 Difference]: Without dead ends: 13108 [2024-11-14 03:01:23,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:23,321 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 1634 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 5421 mSolverCounterSat, 1488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 6909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1488 IncrementalHoareTripleChecker+Valid, 5421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:23,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 515 Invalid, 6909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1488 Valid, 5421 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-14 03:01:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13108 states. [2024-11-14 03:01:23,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13108 to 13108. [2024-11-14 03:01:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13108 states, 13107 states have (on average 1.5523765926604105) internal successors, (20347), 13107 states have internal predecessors, (20347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13108 states to 13108 states and 20347 transitions. [2024-11-14 03:01:23,498 INFO L78 Accepts]: Start accepts. Automaton has 13108 states and 20347 transitions. Word has length 1721 [2024-11-14 03:01:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:23,499 INFO L471 AbstractCegarLoop]: Abstraction has 13108 states and 20347 transitions. [2024-11-14 03:01:23,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 2 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:23,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13108 states and 20347 transitions. [2024-11-14 03:01:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1727 [2024-11-14 03:01:23,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:23,521 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:23,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-14 03:01:23,521 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:23,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1564803660, now seen corresponding path program 1 times [2024-11-14 03:01:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:23,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148232603] [2024-11-14 03:01:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:23,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-14 03:01:24,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148232603] [2024-11-14 03:01:24,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148232603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:24,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:24,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:01:24,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519457584] [2024-11-14 03:01:24,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:24,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:01:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:01:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:24,564 INFO L87 Difference]: Start difference. First operand 13108 states and 20347 transitions. Second operand has 3 states, 3 states have (on average 546.0) internal successors, (1638), 2 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:33,889 INFO L93 Difference]: Finished difference Result 37680 states and 57771 transitions. [2024-11-14 03:01:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:01:33,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 546.0) internal successors, (1638), 2 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1726 [2024-11-14 03:01:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:33,940 INFO L225 Difference]: With dead ends: 37680 [2024-11-14 03:01:33,940 INFO L226 Difference]: Without dead ends: 24574 [2024-11-14 03:01:33,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:33,949 INFO L432 NwaCegarLoop]: 699 mSDtfsCounter, 1677 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 2180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 7197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2180 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:33,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 709 Invalid, 7197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2180 Valid, 5017 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-14 03:01:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24574 states. [2024-11-14 03:01:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24574 to 24574. [2024-11-14 03:01:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24574 states, 24573 states have (on average 1.4336873804582264) internal successors, (35230), 24573 states have internal predecessors, (35230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24574 states to 24574 states and 35230 transitions. [2024-11-14 03:01:34,238 INFO L78 Accepts]: Start accepts. Automaton has 24574 states and 35230 transitions. Word has length 1726 [2024-11-14 03:01:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:34,238 INFO L471 AbstractCegarLoop]: Abstraction has 24574 states and 35230 transitions. [2024-11-14 03:01:34,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 546.0) internal successors, (1638), 2 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 24574 states and 35230 transitions. [2024-11-14 03:01:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2024-11-14 03:01:34,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:34,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:34,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-14 03:01:34,267 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:34,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 371274342, now seen corresponding path program 1 times [2024-11-14 03:01:34,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:34,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267363694] [2024-11-14 03:01:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-14 03:01:35,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267363694] [2024-11-14 03:01:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267363694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:01:35,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159971260] [2024-11-14 03:01:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:35,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:01:35,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:35,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:01:35,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:35,781 INFO L87 Difference]: Start difference. First operand 24574 states and 35230 transitions. Second operand has 3 states, 3 states have (on average 547.3333333333334) internal successors, (1642), 2 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:45,395 INFO L93 Difference]: Finished difference Result 63888 states and 92008 transitions. [2024-11-14 03:01:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:01:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 547.3333333333334) internal successors, (1642), 2 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1734 [2024-11-14 03:01:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:45,459 INFO L225 Difference]: With dead ends: 63888 [2024-11-14 03:01:45,459 INFO L226 Difference]: Without dead ends: 39316 [2024-11-14 03:01:45,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:45,471 INFO L432 NwaCegarLoop]: 891 mSDtfsCounter, 2081 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4594 mSolverCounterSat, 2021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 6615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2021 IncrementalHoareTripleChecker+Valid, 4594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:45,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 901 Invalid, 6615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2021 Valid, 4594 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-14 03:01:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39316 states. [2024-11-14 03:01:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39316 to 39316. [2024-11-14 03:01:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39316 states, 39315 states have (on average 1.2830726185934123) internal successors, (50444), 39315 states have internal predecessors, (50444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39316 states to 39316 states and 50444 transitions. [2024-11-14 03:01:45,896 INFO L78 Accepts]: Start accepts. Automaton has 39316 states and 50444 transitions. Word has length 1734 [2024-11-14 03:01:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:45,896 INFO L471 AbstractCegarLoop]: Abstraction has 39316 states and 50444 transitions. [2024-11-14 03:01:45,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 547.3333333333334) internal successors, (1642), 2 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 39316 states and 50444 transitions. [2024-11-14 03:01:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1742 [2024-11-14 03:01:45,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:45,932 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:45,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-14 03:01:45,932 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:45,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 859350358, now seen corresponding path program 1 times [2024-11-14 03:01:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530868163] [2024-11-14 03:01:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:01:48,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530868163] [2024-11-14 03:01:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530868163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:48,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:01:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021332294] [2024-11-14 03:01:48,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:48,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:01:48,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:01:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:48,589 INFO L87 Difference]: Start difference. First operand 39316 states and 50444 transitions. Second operand has 3 states, 3 states have (on average 580.3333333333334) internal successors, (1741), 3 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:58,199 INFO L93 Difference]: Finished difference Result 90096 states and 116325 transitions. [2024-11-14 03:01:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:01:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 580.3333333333334) internal successors, (1741), 3 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1741 [2024-11-14 03:01:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:58,283 INFO L225 Difference]: With dead ends: 90096 [2024-11-14 03:01:58,283 INFO L226 Difference]: Without dead ends: 50782 [2024-11-14 03:01:58,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:58,306 INFO L432 NwaCegarLoop]: 2965 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5530 mSolverCounterSat, 1416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 6946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1416 IncrementalHoareTripleChecker+Valid, 5530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:58,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2977 Invalid, 6946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1416 Valid, 5530 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-14 03:01:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50782 states. [2024-11-14 03:01:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50782 to 50782. [2024-11-14 03:01:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50782 states, 50781 states have (on average 1.2437328922234694) internal successors, (63158), 50781 states have internal predecessors, (63158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50782 states to 50782 states and 63158 transitions. [2024-11-14 03:01:58,869 INFO L78 Accepts]: Start accepts. Automaton has 50782 states and 63158 transitions. Word has length 1741 [2024-11-14 03:01:58,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:58,871 INFO L471 AbstractCegarLoop]: Abstraction has 50782 states and 63158 transitions. [2024-11-14 03:01:58,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 580.3333333333334) internal successors, (1741), 3 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:01:58,871 INFO L276 IsEmpty]: Start isEmpty. Operand 50782 states and 63158 transitions. [2024-11-14 03:01:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1828 [2024-11-14 03:01:58,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:58,915 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-14 03:01:58,915 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:58,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1119841292, now seen corresponding path program 1 times [2024-11-14 03:01:58,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:58,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506962647] [2024-11-14 03:01:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:58,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-14 03:02:00,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506962647] [2024-11-14 03:02:00,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506962647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:00,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:02:00,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567489290] [2024-11-14 03:02:00,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:00,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:00,599 INFO L87 Difference]: Start difference. First operand 50782 states and 63158 transitions. Second operand has 3 states, 3 states have (on average 567.6666666666666) internal successors, (1703), 2 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:10,553 INFO L93 Difference]: Finished difference Result 142512 states and 174963 transitions. [2024-11-14 03:02:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 567.6666666666666) internal successors, (1703), 2 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1827 [2024-11-14 03:02:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:10,664 INFO L225 Difference]: With dead ends: 142512 [2024-11-14 03:02:10,664 INFO L226 Difference]: Without dead ends: 91732 [2024-11-14 03:02:10,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:10,688 INFO L432 NwaCegarLoop]: 1002 mSDtfsCounter, 1978 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4426 mSolverCounterSat, 2280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 6706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2280 IncrementalHoareTripleChecker+Valid, 4426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:10,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 1012 Invalid, 6706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2280 Valid, 4426 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-14 03:02:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91732 states. [2024-11-14 03:02:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91732 to 85180. [2024-11-14 03:02:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85180 states, 85179 states have (on average 1.1631388018173494) internal successors, (99075), 85179 states have internal predecessors, (99075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85180 states to 85180 states and 99075 transitions. [2024-11-14 03:02:11,576 INFO L78 Accepts]: Start accepts. Automaton has 85180 states and 99075 transitions. Word has length 1827 [2024-11-14 03:02:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:11,576 INFO L471 AbstractCegarLoop]: Abstraction has 85180 states and 99075 transitions. [2024-11-14 03:02:11,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 567.6666666666666) internal successors, (1703), 2 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 85180 states and 99075 transitions. [2024-11-14 03:02:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1846 [2024-11-14 03:02:11,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:11,902 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:11,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-14 03:02:11,902 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:11,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -146001926, now seen corresponding path program 1 times [2024-11-14 03:02:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:11,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501391127] [2024-11-14 03:02:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-14 03:02:14,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501391127] [2024-11-14 03:02:14,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501391127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:14,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:14,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:02:14,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620112513] [2024-11-14 03:02:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:14,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:14,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:14,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:14,148 INFO L87 Difference]: Start difference. First operand 85180 states and 99075 transitions. Second operand has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 3 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:24,340 INFO L93 Difference]: Finished difference Result 235878 states and 272254 transitions. [2024-11-14 03:02:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:24,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 3 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1845 [2024-11-14 03:02:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:24,526 INFO L225 Difference]: With dead ends: 235878 [2024-11-14 03:02:24,526 INFO L226 Difference]: Without dead ends: 150700 [2024-11-14 03:02:24,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:24,578 INFO L432 NwaCegarLoop]: 2934 mSDtfsCounter, 1660 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4760 mSolverCounterSat, 2112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 6872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2112 IncrementalHoareTripleChecker+Valid, 4760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:24,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 2946 Invalid, 6872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2112 Valid, 4760 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-14 03:02:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150700 states. [2024-11-14 03:02:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150700 to 144148. [2024-11-14 03:02:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144148 states, 144147 states have (on average 1.1130373854468008) internal successors, (160441), 144147 states have internal predecessors, (160441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144148 states to 144148 states and 160441 transitions. [2024-11-14 03:02:26,757 INFO L78 Accepts]: Start accepts. Automaton has 144148 states and 160441 transitions. Word has length 1845 [2024-11-14 03:02:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:26,758 INFO L471 AbstractCegarLoop]: Abstraction has 144148 states and 160441 transitions. [2024-11-14 03:02:26,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 3 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 144148 states and 160441 transitions. [2024-11-14 03:02:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1907 [2024-11-14 03:02:27,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:27,386 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:27,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-14 03:02:27,390 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:27,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash -887118690, now seen corresponding path program 1 times [2024-11-14 03:02:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:27,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266548827] [2024-11-14 03:02:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:27,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:02:30,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266548827] [2024-11-14 03:02:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266548827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:02:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810921651] [2024-11-14 03:02:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:30,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:30,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:30,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:30,598 INFO L87 Difference]: Start difference. First operand 144148 states and 160441 transitions. Second operand has 3 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:40,797 INFO L93 Difference]: Finished difference Result 339072 states and 375587 transitions. [2024-11-14 03:02:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:40,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1906 [2024-11-14 03:02:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:41,071 INFO L225 Difference]: With dead ends: 339072 [2024-11-14 03:02:41,071 INFO L226 Difference]: Without dead ends: 194926 [2024-11-14 03:02:41,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:41,173 INFO L432 NwaCegarLoop]: 2927 mSDtfsCounter, 1393 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5149 mSolverCounterSat, 1303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 6452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1303 IncrementalHoareTripleChecker+Valid, 5149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:41,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 2939 Invalid, 6452 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1303 Valid, 5149 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-14 03:02:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194926 states. [2024-11-14 03:02:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194926 to 191650. [2024-11-14 03:02:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191650 states, 191649 states have (on average 1.0985395175555313) internal successors, (210534), 191649 states have internal predecessors, (210534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191650 states to 191650 states and 210534 transitions. [2024-11-14 03:02:44,092 INFO L78 Accepts]: Start accepts. Automaton has 191650 states and 210534 transitions. Word has length 1906 [2024-11-14 03:02:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:44,093 INFO L471 AbstractCegarLoop]: Abstraction has 191650 states and 210534 transitions. [2024-11-14 03:02:44,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 191650 states and 210534 transitions. [2024-11-14 03:02:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1973 [2024-11-14 03:02:44,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:44,645 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:44,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-14 03:02:44,645 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:44,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1438514993, now seen corresponding path program 1 times [2024-11-14 03:02:44,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:44,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401797991] [2024-11-14 03:02:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:44,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-14 03:02:49,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401797991] [2024-11-14 03:02:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401797991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:49,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:49,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:02:49,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518877530] [2024-11-14 03:02:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:49,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:49,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:49,805 INFO L87 Difference]: Start difference. First operand 191650 states and 210534 transitions. Second operand has 3 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:01,045 INFO L93 Difference]: Finished difference Result 434076 states and 477177 transitions. [2024-11-14 03:03:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:01,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1972 [2024-11-14 03:03:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:01,588 INFO L225 Difference]: With dead ends: 434076 [2024-11-14 03:03:01,589 INFO L226 Difference]: Without dead ends: 240790 [2024-11-14 03:03:01,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:01,645 INFO L432 NwaCegarLoop]: 3041 mSDtfsCounter, 1569 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5899 mSolverCounterSat, 1024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 6923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 5899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:01,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 3053 Invalid, 6923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1024 Valid, 5899 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-14 03:03:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240790 states. [2024-11-14 03:03:04,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240790 to 240790. [2024-11-14 03:03:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240790 states, 240789 states have (on average 1.0848792926587179) internal successors, (261227), 240789 states have internal predecessors, (261227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240790 states to 240790 states and 261227 transitions. [2024-11-14 03:03:06,253 INFO L78 Accepts]: Start accepts. Automaton has 240790 states and 261227 transitions. Word has length 1972 [2024-11-14 03:03:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:06,254 INFO L471 AbstractCegarLoop]: Abstraction has 240790 states and 261227 transitions. [2024-11-14 03:03:06,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 240790 states and 261227 transitions. [2024-11-14 03:03:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2108 [2024-11-14 03:03:06,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:06,835 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:03:06,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-14 03:03:06,836 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:06,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash -869908859, now seen corresponding path program 1 times [2024-11-14 03:03:06,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:06,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986753909] [2024-11-14 03:03:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:06,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 03:03:09,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986753909] [2024-11-14 03:03:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986753909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:09,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:03:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:03:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118966796] [2024-11-14 03:03:09,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:09,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:09,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:09,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:09,742 INFO L87 Difference]: Start difference. First operand 240790 states and 261227 transitions. Second operand has 3 states, 3 states have (on average 691.0) internal successors, (2073), 3 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:21,621 INFO L93 Difference]: Finished difference Result 566754 states and 616327 transitions. [2024-11-14 03:03:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 691.0) internal successors, (2073), 3 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2107 [2024-11-14 03:03:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:22,040 INFO L225 Difference]: With dead ends: 566754 [2024-11-14 03:03:22,041 INFO L226 Difference]: Without dead ends: 321052 [2024-11-14 03:03:22,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:22,136 INFO L432 NwaCegarLoop]: 2297 mSDtfsCounter, 1650 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4714 mSolverCounterSat, 2276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 6990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2276 IncrementalHoareTripleChecker+Valid, 4714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:22,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 2308 Invalid, 6990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2276 Valid, 4714 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-11-14 03:03:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321052 states. [2024-11-14 03:03:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321052 to 309586. [2024-11-14 03:03:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309586 states, 309585 states have (on average 1.0775295960721611) internal successors, (333587), 309585 states have internal predecessors, (333587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309586 states to 309586 states and 333587 transitions. [2024-11-14 03:03:27,191 INFO L78 Accepts]: Start accepts. Automaton has 309586 states and 333587 transitions. Word has length 2107 [2024-11-14 03:03:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:27,192 INFO L471 AbstractCegarLoop]: Abstraction has 309586 states and 333587 transitions. [2024-11-14 03:03:27,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 691.0) internal successors, (2073), 3 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 309586 states and 333587 transitions. [2024-11-14 03:03:27,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2182 [2024-11-14 03:03:27,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:27,432 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:03:27,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-14 03:03:27,432 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:27,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash 328112051, now seen corresponding path program 1 times [2024-11-14 03:03:27,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:27,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265719198] [2024-11-14 03:03:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-11-14 03:03:30,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:30,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265719198] [2024-11-14 03:03:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265719198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:30,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:03:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:03:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947937383] [2024-11-14 03:03:30,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:30,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:30,082 INFO L87 Difference]: Start difference. First operand 309586 states and 333587 transitions. Second operand has 3 states, 3 states have (on average 631.3333333333334) internal successors, (1894), 3 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:41,322 INFO L93 Difference]: Finished difference Result 710898 states and 766693 transitions. [2024-11-14 03:03:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 631.3333333333334) internal successors, (1894), 3 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2181 [2024-11-14 03:03:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:42,619 INFO L225 Difference]: With dead ends: 710898 [2024-11-14 03:03:42,619 INFO L226 Difference]: Without dead ends: 401314 [2024-11-14 03:03:42,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:42,741 INFO L432 NwaCegarLoop]: 2804 mSDtfsCounter, 1687 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5193 mSolverCounterSat, 1131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 6324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1131 IncrementalHoareTripleChecker+Valid, 5193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:42,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 2816 Invalid, 6324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1131 Valid, 5193 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-14 03:03:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401314 states. [2024-11-14 03:03:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401314 to 391486. [2024-11-14 03:03:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391486 states, 391485 states have (on average 1.0621071049976372) internal successors, (415799), 391485 states have internal predecessors, (415799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391486 states to 391486 states and 415799 transitions. [2024-11-14 03:03:48,694 INFO L78 Accepts]: Start accepts. Automaton has 391486 states and 415799 transitions. Word has length 2181 [2024-11-14 03:03:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:48,695 INFO L471 AbstractCegarLoop]: Abstraction has 391486 states and 415799 transitions. [2024-11-14 03:03:48,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 631.3333333333334) internal successors, (1894), 3 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 391486 states and 415799 transitions. [2024-11-14 03:03:50,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2284 [2024-11-14 03:03:50,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:50,171 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:03:50,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-14 03:03:50,172 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:50,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash -43244317, now seen corresponding path program 1 times [2024-11-14 03:03:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:50,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630941883] [2024-11-14 03:03:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:50,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 921 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 03:03:52,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:52,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630941883] [2024-11-14 03:03:52,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630941883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:52,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:03:52,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:03:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430422509] [2024-11-14 03:03:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:52,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:52,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:52,858 INFO L87 Difference]: Start difference. First operand 391486 states and 415799 transitions. Second operand has 3 states, 3 states have (on average 755.6666666666666) internal successors, (2267), 3 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:04:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:04:05,083 INFO L93 Difference]: Finished difference Result 787884 states and 837207 transitions. [2024-11-14 03:04:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:04:05,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 755.6666666666666) internal successors, (2267), 3 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2283 [2024-11-14 03:04:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:04:05,622 INFO L225 Difference]: With dead ends: 787884 [2024-11-14 03:04:05,622 INFO L226 Difference]: Without dead ends: 396400 [2024-11-14 03:04:05,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:04:05,725 INFO L432 NwaCegarLoop]: 917 mSDtfsCounter, 1467 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5309 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 6532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 5309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:04:05,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 928 Invalid, 6532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 5309 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-14 03:04:06,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396400 states.