./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.06.cil.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_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/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_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.06.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/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_026447b7-b3b0-4791-847b-d40c0cdc9e4c/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 bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:51:09,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:51:09,214 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:51:09,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:51:09,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:51:09,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:51:09,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:51:09,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:51:09,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:51:09,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:51:09,261 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:51:09,261 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:51:09,261 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:51:09,262 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:51:09,262 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:51:09,263 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:51:09,263 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:51:09,264 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:51:09,264 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:51:09,264 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:51:09,264 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:51:09,264 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:51:09,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:51:09,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:51:09,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:51:09,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:51:09,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:51:09,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:51:09,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:51:09,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:51:09,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:51:09,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:51:09,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:51:09,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:51:09,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:51:09,267 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:51:09,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:51:09,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:51:09,267 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:51:09,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:51:09,268 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_026447b7-b3b0-4791-847b-d40c0cdc9e4c/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 -> bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df [2024-11-14 03:51:09,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:51:09,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:51:09,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:51:09,685 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:51:09,686 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:51:09,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/systemc/transmitter.06.cil.c Unable to find full path for "g++" [2024-11-14 03:51:11,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:51:11,982 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:51:11,985 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/sv-benchmarks/c/systemc/transmitter.06.cil.c [2024-11-14 03:51:11,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/data/f05efdcb0/10536e64b85e4312aa9b9e1baebceaf9/FLAGcd5ff4041 [2024-11-14 03:51:12,022 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/data/f05efdcb0/10536e64b85e4312aa9b9e1baebceaf9 [2024-11-14 03:51:12,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:51:12,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:51:12,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:51:12,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:51:12,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:51:12,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1e85b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12, skipping insertion in model container [2024-11-14 03:51:12,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:51:12,275 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_026447b7-b3b0-4791-847b-d40c0cdc9e4c/sv-benchmarks/c/systemc/transmitter.06.cil.c[706,719] [2024-11-14 03:51:12,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:51:12,431 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:51:12,445 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_026447b7-b3b0-4791-847b-d40c0cdc9e4c/sv-benchmarks/c/systemc/transmitter.06.cil.c[706,719] [2024-11-14 03:51:12,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:51:12,517 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:51:12,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12 WrapperNode [2024-11-14 03:51:12,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:51:12,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:51:12,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:51:12,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:51:12,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,569 INFO L138 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 495 [2024-11-14 03:51:12,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:51:12,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:51:12,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:51:12,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:51:12,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:51:12,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:51:12,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:51:12,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:51:12,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (1/1) ... [2024-11-14 03:51:12,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:51:12,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:51:12,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:51:12,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_026447b7-b3b0-4791-847b-d40c0cdc9e4c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:51:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:51:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-14 03:51:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-14 03:51:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-14 03:51:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-14 03:51:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-14 03:51:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-14 03:51:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-14 03:51:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-14 03:51:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-14 03:51:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-14 03:51:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:51:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-14 03:51:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-14 03:51:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:51:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:51:12,800 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:51:12,803 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:51:13,497 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-14 03:51:13,499 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:51:13,841 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:51:13,843 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-14 03:51:13,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:51:13 BoogieIcfgContainer [2024-11-14 03:51:13,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:51:13,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:51:13,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:51:13,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:51:13,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:51:12" (1/3) ... [2024-11-14 03:51:13,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42728adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:51:13, skipping insertion in model container [2024-11-14 03:51:13,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:51:12" (2/3) ... [2024-11-14 03:51:13,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42728adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:51:13, skipping insertion in model container [2024-11-14 03:51:13,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:51:13" (3/3) ... [2024-11-14 03:51:13,857 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2024-11-14 03:51:13,874 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:51:13,877 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG transmitter.06.cil.c that has 7 procedures, 127 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2024-11-14 03:51:13,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:51:13,976 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;@19edfca3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:51:13,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:51:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 100 states have (on average 1.5) internal successors, (150), 102 states have internal predecessors, (150), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-14 03:51:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:51:13,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:13,993 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] [2024-11-14 03:51:13,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:13,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:13,999 INFO L85 PathProgramCache]: Analyzing trace with hash -186523111, now seen corresponding path program 1 times [2024-11-14 03:51:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347693480] [2024-11-14 03:51:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:14,502 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 03:51:14,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:14,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347693480] [2024-11-14 03:51:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347693480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:14,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:51:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311056955] [2024-11-14 03:51:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:14,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:51:14,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:51:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:51:14,538 INFO L87 Difference]: Start difference. First operand has 127 states, 100 states have (on average 1.5) internal successors, (150), 102 states have internal predecessors, (150), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 03:51:15,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:15,053 INFO L93 Difference]: Finished difference Result 368 states and 553 transitions. [2024-11-14 03:51:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:51:15,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 53 [2024-11-14 03:51:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:15,071 INFO L225 Difference]: With dead ends: 368 [2024-11-14 03:51:15,071 INFO L226 Difference]: Without dead ends: 242 [2024-11-14 03:51:15,076 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 03:51:15,083 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 323 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:15,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 494 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:51:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-14 03:51:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2024-11-14 03:51:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 191 states have (on average 1.4397905759162304) internal successors, (275), 193 states have internal predecessors, (275), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-14 03:51:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2024-11-14 03:51:15,179 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 53 [2024-11-14 03:51:15,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:15,180 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2024-11-14 03:51:15,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 03:51:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2024-11-14 03:51:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:51:15,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:15,185 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] [2024-11-14 03:51:15,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:51:15,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:15,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1712007194, now seen corresponding path program 1 times [2024-11-14 03:51:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021984499] [2024-11-14 03:51:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:15,522 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 03:51:15,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021984499] [2024-11-14 03:51:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021984499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:15,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:15,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:51:15,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625508132] [2024-11-14 03:51:15,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:15,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:51:15,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:51:15,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:51:15,528 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 03:51:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:16,455 INFO L93 Difference]: Finished difference Result 1369 states and 2067 transitions. [2024-11-14 03:51:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:51:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 53 [2024-11-14 03:51:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:16,473 INFO L225 Difference]: With dead ends: 1369 [2024-11-14 03:51:16,473 INFO L226 Difference]: Without dead ends: 1136 [2024-11-14 03:51:16,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:51:16,482 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 720 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:16,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 739 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 03:51:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2024-11-14 03:51:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1100. [2024-11-14 03:51:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 897 states have (on average 1.4303232998885174) internal successors, (1283), 905 states have internal predecessors, (1283), 142 states have call successors, (142), 60 states have call predecessors, (142), 60 states have return successors, (208), 135 states have call predecessors, (208), 142 states have call successors, (208) [2024-11-14 03:51:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1633 transitions. [2024-11-14 03:51:16,662 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1633 transitions. Word has length 53 [2024-11-14 03:51:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:16,662 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1633 transitions. [2024-11-14 03:51:16,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 03:51:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1633 transitions. [2024-11-14 03:51:16,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:51:16,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:16,667 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] [2024-11-14 03:51:16,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:51:16,667 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:16,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1457700133, now seen corresponding path program 1 times [2024-11-14 03:51:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:16,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845097580] [2024-11-14 03:51:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:16,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:16,907 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 03:51:16,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845097580] [2024-11-14 03:51:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845097580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:51:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202283517] [2024-11-14 03:51:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:16,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:51:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:51:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:51:16,910 INFO L87 Difference]: Start difference. First operand 1100 states and 1633 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 03:51:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:17,805 INFO L93 Difference]: Finished difference Result 4323 states and 6589 transitions. [2024-11-14 03:51:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:51:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 53 [2024-11-14 03:51:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:17,846 INFO L225 Difference]: With dead ends: 4323 [2024-11-14 03:51:17,846 INFO L226 Difference]: Without dead ends: 3228 [2024-11-14 03:51:17,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:51:17,858 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 722 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:17,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 737 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:51:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2024-11-14 03:51:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 2982. [2024-11-14 03:51:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2485 states have (on average 1.4402414486921529) internal successors, (3579), 2475 states have internal predecessors, (3579), 332 states have call successors, (332), 148 states have call predecessors, (332), 164 states have return successors, (610), 359 states have call predecessors, (610), 332 states have call successors, (610) [2024-11-14 03:51:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 4521 transitions. [2024-11-14 03:51:18,245 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 4521 transitions. Word has length 53 [2024-11-14 03:51:18,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:18,247 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 4521 transitions. [2024-11-14 03:51:18,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 03:51:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 4521 transitions. [2024-11-14 03:51:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:51:18,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:18,252 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] [2024-11-14 03:51:18,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:51:18,252 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:18,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:18,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1208616890, now seen corresponding path program 1 times [2024-11-14 03:51:18,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:18,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502462367] [2024-11-14 03:51:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:18,444 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 03:51:18,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:18,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502462367] [2024-11-14 03:51:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502462367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:18,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:51:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921031977] [2024-11-14 03:51:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:18,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:51:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:51:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:51:18,448 INFO L87 Difference]: Start difference. First operand 2982 states and 4521 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 03:51:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:19,693 INFO L93 Difference]: Finished difference Result 10951 states and 17131 transitions. [2024-11-14 03:51:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:51:19,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 53 [2024-11-14 03:51:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:19,755 INFO L225 Difference]: With dead ends: 10951 [2024-11-14 03:51:19,755 INFO L226 Difference]: Without dead ends: 7974 [2024-11-14 03:51:19,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:51:19,771 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 718 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:19,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 735 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:51:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7974 states. [2024-11-14 03:51:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7974 to 7426. [2024-11-14 03:51:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 6251 states have (on average 1.4485682290833466) internal successors, (9055), 6187 states have internal predecessors, (9055), 754 states have call successors, (754), 348 states have call predecessors, (754), 420 states have return successors, (1694), 891 states have call predecessors, (1694), 754 states have call successors, (1694) [2024-11-14 03:51:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 11503 transitions. [2024-11-14 03:51:20,544 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 11503 transitions. Word has length 53 [2024-11-14 03:51:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:20,546 INFO L471 AbstractCegarLoop]: Abstraction has 7426 states and 11503 transitions. [2024-11-14 03:51:20,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 03:51:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 11503 transitions. [2024-11-14 03:51:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:51:20,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:20,551 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] [2024-11-14 03:51:20,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:51:20,551 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:20,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash 900177881, now seen corresponding path program 1 times [2024-11-14 03:51:20,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:20,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052261539] [2024-11-14 03:51:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:20,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:20,866 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 03:51:20,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052261539] [2024-11-14 03:51:20,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052261539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:20,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:20,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:51:20,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443431742] [2024-11-14 03:51:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:20,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:51:20,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:20,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:51:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:51:20,870 INFO L87 Difference]: Start difference. First operand 7426 states and 11503 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 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 03:51:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:22,073 INFO L93 Difference]: Finished difference Result 20195 states and 31388 transitions. [2024-11-14 03:51:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:51:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 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 53 [2024-11-14 03:51:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:22,203 INFO L225 Difference]: With dead ends: 20195 [2024-11-14 03:51:22,203 INFO L226 Difference]: Without dead ends: 12775 [2024-11-14 03:51:22,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:51:22,236 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 503 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:22,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 477 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:51:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2024-11-14 03:51:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 11888. [2024-11-14 03:51:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11888 states, 10046 states have (on average 1.434700378260004) internal successors, (14413), 9965 states have internal predecessors, (14413), 1129 states have call successors, (1129), 568 states have call predecessors, (1129), 712 states have return successors, (2539), 1355 states have call predecessors, (2539), 1129 states have call successors, (2539) [2024-11-14 03:51:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11888 states to 11888 states and 18081 transitions. [2024-11-14 03:51:23,449 INFO L78 Accepts]: Start accepts. Automaton has 11888 states and 18081 transitions. Word has length 53 [2024-11-14 03:51:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:23,449 INFO L471 AbstractCegarLoop]: Abstraction has 11888 states and 18081 transitions. [2024-11-14 03:51:23,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 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 03:51:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 11888 states and 18081 transitions. [2024-11-14 03:51:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 03:51:23,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:23,451 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] [2024-11-14 03:51:23,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:51:23,452 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:23,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -78442039, now seen corresponding path program 1 times [2024-11-14 03:51:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418447583] [2024-11-14 03:51:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:23,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:23,674 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 03:51:23,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:23,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418447583] [2024-11-14 03:51:23,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418447583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:23,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:23,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:51:23,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008027950] [2024-11-14 03:51:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:23,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:51:23,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:51:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:51:23,676 INFO L87 Difference]: Start difference. First operand 11888 states and 18081 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 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 03:51:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:25,705 INFO L93 Difference]: Finished difference Result 34885 states and 53305 transitions. [2024-11-14 03:51:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:51:25,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 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 55 [2024-11-14 03:51:25,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:25,858 INFO L225 Difference]: With dead ends: 34885 [2024-11-14 03:51:25,858 INFO L226 Difference]: Without dead ends: 23003 [2024-11-14 03:51:25,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:51:25,911 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 467 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:25,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 532 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:51:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23003 states. [2024-11-14 03:51:27,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23003 to 21229. [2024-11-14 03:51:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21229 states, 17964 states have (on average 1.4320863950122467) internal successors, (25726), 17777 states have internal predecessors, (25726), 1972 states have call successors, (1972), 996 states have call predecessors, (1972), 1292 states have return successors, (4675), 2456 states have call predecessors, (4675), 1972 states have call successors, (4675) [2024-11-14 03:51:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21229 states to 21229 states and 32373 transitions. [2024-11-14 03:51:27,742 INFO L78 Accepts]: Start accepts. Automaton has 21229 states and 32373 transitions. Word has length 55 [2024-11-14 03:51:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:27,742 INFO L471 AbstractCegarLoop]: Abstraction has 21229 states and 32373 transitions. [2024-11-14 03:51:27,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 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 03:51:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21229 states and 32373 transitions. [2024-11-14 03:51:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 03:51:27,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:27,745 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] [2024-11-14 03:51:27,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:51:27,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:27,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash 842482637, now seen corresponding path program 1 times [2024-11-14 03:51:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:27,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897947700] [2024-11-14 03:51:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:27,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:27,972 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 03:51:27,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897947700] [2024-11-14 03:51:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897947700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:27,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:27,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:51:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342538576] [2024-11-14 03:51:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:27,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:51:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:51:27,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:51:27,974 INFO L87 Difference]: Start difference. First operand 21229 states and 32373 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 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 03:51:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:30,660 INFO L93 Difference]: Finished difference Result 56959 states and 88013 transitions. [2024-11-14 03:51:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:51:30,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 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 57 [2024-11-14 03:51:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:30,892 INFO L225 Difference]: With dead ends: 56959 [2024-11-14 03:51:30,892 INFO L226 Difference]: Without dead ends: 35736 [2024-11-14 03:51:30,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:51:30,967 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 445 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:30,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 532 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:51:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35736 states. [2024-11-14 03:51:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35736 to 33662. [2024-11-14 03:51:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33662 states, 28484 states have (on average 1.4249403173711557) internal successors, (40588), 28297 states have internal predecessors, (40588), 3157 states have call successors, (3157), 1644 states have call predecessors, (3157), 2020 states have return successors, (7489), 3721 states have call predecessors, (7489), 3157 states have call successors, (7489) [2024-11-14 03:51:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33662 states to 33662 states and 51234 transitions. [2024-11-14 03:51:34,073 INFO L78 Accepts]: Start accepts. Automaton has 33662 states and 51234 transitions. Word has length 57 [2024-11-14 03:51:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:34,074 INFO L471 AbstractCegarLoop]: Abstraction has 33662 states and 51234 transitions. [2024-11-14 03:51:34,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 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 03:51:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 33662 states and 51234 transitions. [2024-11-14 03:51:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 03:51:34,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:34,076 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] [2024-11-14 03:51:34,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:51:34,077 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:34,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash 256636361, now seen corresponding path program 1 times [2024-11-14 03:51:34,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:34,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086701709] [2024-11-14 03:51:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:34,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:34,309 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 03:51:34,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086701709] [2024-11-14 03:51:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086701709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:51:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473643788] [2024-11-14 03:51:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:34,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:51:34,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:51:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:51:34,313 INFO L87 Difference]: Start difference. First operand 33662 states and 51234 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 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 03:51:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:38,522 INFO L93 Difference]: Finished difference Result 90907 states and 140256 transitions. [2024-11-14 03:51:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:51:38,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 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 59 [2024-11-14 03:51:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:38,924 INFO L225 Difference]: With dead ends: 90907 [2024-11-14 03:51:38,924 INFO L226 Difference]: Without dead ends: 57251 [2024-11-14 03:51:39,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:51:39,056 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 468 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:39,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 404 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:51:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57251 states. [2024-11-14 03:51:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57251 to 54489. [2024-11-14 03:51:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54489 states, 46083 states have (on average 1.414751643773192) internal successors, (65196), 45926 states have internal predecessors, (65196), 5161 states have call successors, (5161), 2772 states have call predecessors, (5161), 3244 states have return successors, (12241), 5791 states have call predecessors, (12241), 5161 states have call successors, (12241) [2024-11-14 03:51:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54489 states to 54489 states and 82598 transitions. [2024-11-14 03:51:42,880 INFO L78 Accepts]: Start accepts. Automaton has 54489 states and 82598 transitions. Word has length 59 [2024-11-14 03:51:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:42,881 INFO L471 AbstractCegarLoop]: Abstraction has 54489 states and 82598 transitions. [2024-11-14 03:51:42,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (5), 2 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 03:51:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 54489 states and 82598 transitions. [2024-11-14 03:51:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 03:51:42,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:42,883 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] [2024-11-14 03:51:42,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 03:51:42,883 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:42,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash 287910093, now seen corresponding path program 1 times [2024-11-14 03:51:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:42,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681047643] [2024-11-14 03:51:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:42,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:43,105 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 03:51:43,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:43,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681047643] [2024-11-14 03:51:43,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681047643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:51:43,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:51:43,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:51:43,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743669520] [2024-11-14 03:51:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:51:43,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:51:43,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:51:43,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:51:43,107 INFO L87 Difference]: Start difference. First operand 54489 states and 82598 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 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 03:51:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:50,608 INFO L93 Difference]: Finished difference Result 168185 states and 259234 transitions. [2024-11-14 03:51:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:51:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 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 61 [2024-11-14 03:51:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:51,419 INFO L225 Difference]: With dead ends: 168185 [2024-11-14 03:51:51,420 INFO L226 Difference]: Without dead ends: 113702 [2024-11-14 03:51:51,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:51:51,584 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 473 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:51,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 453 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:51:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113702 states.