./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --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_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/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_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/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_b70a9926-b6f1-4054-89b7-384edfd9ddb8/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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:44:11,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:44:11,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:44:11,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:44:11,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:44:12,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:44:12,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:44:12,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:44:12,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:44:12,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:44:12,014 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:44:12,014 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:44:12,017 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:44:12,017 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:44:12,018 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:44:12,018 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:44:12,018 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:44:12,018 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:44:12,018 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:44:12,018 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:44:12,018 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:44:12,018 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:44:12,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:44:12,019 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:44:12,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:44:12,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:44:12,020 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:44:12,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:44:12,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:44:12,021 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:44:12,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:44:12,021 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_b70a9926-b6f1-4054-89b7-384edfd9ddb8/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 -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-11-14 03:44:12,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:44:12,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:44:12,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:44:12,374 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:44:12,374 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:44:12,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i Unable to find full path for "g++" [2024-11-14 03:44:14,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:44:14,748 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:44:14,749 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-14 03:44:14,765 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/data/f81e0808b/33c6f5b5f3b948e99a1cf257c9984ff8/FLAG5db300d7c [2024-11-14 03:44:14,781 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/data/f81e0808b/33c6f5b5f3b948e99a1cf257c9984ff8 [2024-11-14 03:44:14,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:44:14,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:44:14,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:44:14,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:44:14,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:44:14,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:44:14" (1/1) ... [2024-11-14 03:44:14,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d71825b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:14, skipping insertion in model container [2024-11-14 03:44:14,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:44:14" (1/1) ... [2024-11-14 03:44:14,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:44:15,006 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_b70a9926-b6f1-4054-89b7-384edfd9ddb8/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2024-11-14 03:44:15,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:44:15,203 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:44:15,214 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_b70a9926-b6f1-4054-89b7-384edfd9ddb8/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2024-11-14 03:44:15,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:44:15,293 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:44:15,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15 WrapperNode [2024-11-14 03:44:15,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:44:15,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:44:15,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:44:15,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:44:15,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,339 INFO L138 Inliner]: procedures = 168, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 99 [2024-11-14 03:44:15,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:44:15,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:44:15,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:44:15,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:44:15,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:44:15,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:44:15,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:44:15,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:44:15,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (1/1) ... [2024-11-14 03:44:15,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:44:15,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:44:15,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:44:15,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:44:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-14 03:44:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-14 03:44:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-14 03:44:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:44:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:44:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:44:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-14 03:44:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:44:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:44:15,459 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 03:44:15,640 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:44:15,642 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:44:15,892 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 03:44:15,892 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:44:16,066 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:44:16,066 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 03:44:16,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:44:16 BoogieIcfgContainer [2024-11-14 03:44:16,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:44:16,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:44:16,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:44:16,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:44:16,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:44:14" (1/3) ... [2024-11-14 03:44:16,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a99b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:44:16, skipping insertion in model container [2024-11-14 03:44:16,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:44:15" (2/3) ... [2024-11-14 03:44:16,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a99b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:44:16, skipping insertion in model container [2024-11-14 03:44:16,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:44:16" (3/3) ... [2024-11-14 03:44:16,082 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-11-14 03:44:16,103 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:44:16,105 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_69-refine-protected-loop-interval_true.i that has 2 procedures, 29 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-14 03:44:16,105 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 03:44:16,181 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 03:44:16,223 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 34 transitions, 72 flow [2024-11-14 03:44:16,260 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135 states, 133 states have (on average 2.225563909774436) internal successors, (296), 134 states have internal predecessors, (296), 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 03:44:16,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:44:16,312 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;@543e4f0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:44:16,312 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-14 03:44:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 133 states have (on average 2.225563909774436) internal successors, (296), 134 states have internal predecessors, (296), 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 03:44:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:44:16,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:44:16,327 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:44:16,329 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 03:44:16,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:44:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1215862735, now seen corresponding path program 1 times [2024-11-14 03:44:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:44:16,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529727668] [2024-11-14 03:44:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:44:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:16,836 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 03:44:16,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:44:16,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529727668] [2024-11-14 03:44:16,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529727668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:44:16,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:44:16,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:44:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101309376] [2024-11-14 03:44:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:44:16,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:44:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:44:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:44:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:44:16,877 INFO L87 Difference]: Start difference. First operand has 135 states, 133 states have (on average 2.225563909774436) internal successors, (296), 134 states have internal predecessors, (296), 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) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 03:44:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:44:17,073 INFO L93 Difference]: Finished difference Result 271 states and 608 transitions. [2024-11-14 03:44:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:44:17,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-14 03:44:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:44:17,090 INFO L225 Difference]: With dead ends: 271 [2024-11-14 03:44:17,090 INFO L226 Difference]: Without dead ends: 138 [2024-11-14 03:44:17,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:44:17,100 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:44:17,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 19 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:44:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-14 03:44:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-14 03:44:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.0875912408759123) internal successors, (286), 137 states have internal predecessors, (286), 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 03:44:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 286 transitions. [2024-11-14 03:44:17,168 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 286 transitions. Word has length 9 [2024-11-14 03:44:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:44:17,169 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 286 transitions. [2024-11-14 03:44:17,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 03:44:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 286 transitions. [2024-11-14 03:44:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 03:44:17,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:44:17,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:44:17,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:44:17,173 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 03:44:17,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:44:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1211676623, now seen corresponding path program 1 times [2024-11-14 03:44:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:44:17,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350365575] [2024-11-14 03:44:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:44:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:17,404 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 03:44:17,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:44:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350365575] [2024-11-14 03:44:17,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350365575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:44:17,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:44:17,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:44:17,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149153079] [2024-11-14 03:44:17,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:44:17,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:44:17,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:44:17,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:44:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:44:17,407 INFO L87 Difference]: Start difference. First operand 138 states and 286 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 03:44:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:44:17,525 INFO L93 Difference]: Finished difference Result 252 states and 532 transitions. [2024-11-14 03:44:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:44:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2024-11-14 03:44:17,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:44:17,532 INFO L225 Difference]: With dead ends: 252 [2024-11-14 03:44:17,532 INFO L226 Difference]: Without dead ends: 156 [2024-11-14 03:44:17,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 03:44:17,534 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:44:17,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:44:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-14 03:44:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-14 03:44:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.0387096774193547) internal successors, (316), 155 states have internal predecessors, (316), 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 03:44:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 316 transitions. [2024-11-14 03:44:17,567 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 316 transitions. Word has length 13 [2024-11-14 03:44:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:44:17,568 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 316 transitions. [2024-11-14 03:44:17,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 03:44:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 316 transitions. [2024-11-14 03:44:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 03:44:17,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:44:17,572 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:44:17,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:44:17,572 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 03:44:17,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:44:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1902081090, now seen corresponding path program 1 times [2024-11-14 03:44:17,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:44:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255891040] [2024-11-14 03:44:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:17,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:44:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:44:17,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:44:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255891040] [2024-11-14 03:44:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255891040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:44:17,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:44:17,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:44:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705311806] [2024-11-14 03:44:17,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:44:17,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:44:17,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:44:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:44:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:44:17,838 INFO L87 Difference]: Start difference. First operand 156 states and 316 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:44:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:44:17,928 INFO L93 Difference]: Finished difference Result 228 states and 464 transitions. [2024-11-14 03:44:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:44:17,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2024-11-14 03:44:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:44:17,931 INFO L225 Difference]: With dead ends: 228 [2024-11-14 03:44:17,931 INFO L226 Difference]: Without dead ends: 104 [2024-11-14 03:44:17,932 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 03:44:17,933 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:44:17,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:44:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-14 03:44:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2024-11-14 03:44:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.8686868686868687) internal successors, (185), 100 states have internal predecessors, (185), 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 03:44:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 185 transitions. [2024-11-14 03:44:17,946 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 185 transitions. Word has length 23 [2024-11-14 03:44:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:44:17,947 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 185 transitions. [2024-11-14 03:44:17,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 03:44:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 185 transitions. [2024-11-14 03:44:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:44:17,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:44:17,948 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:44:17,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:44:17,948 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 03:44:17,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:44:17,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1802241015, now seen corresponding path program 1 times [2024-11-14 03:44:17,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:44:17,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405088111] [2024-11-14 03:44:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:44:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:44:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:44:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:44:18,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:44:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405088111] [2024-11-14 03:44:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405088111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:44:18,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:44:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:44:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888595657] [2024-11-14 03:44:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:44:18,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:44:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:44:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:44:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:44:18,153 INFO L87 Difference]: Start difference. First operand 101 states and 185 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 03:44:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:44:18,280 INFO L93 Difference]: Finished difference Result 188 states and 357 transitions. [2024-11-14 03:44:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:44:18,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2024-11-14 03:44:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:44:18,282 INFO L225 Difference]: With dead ends: 188 [2024-11-14 03:44:18,282 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 03:44:18,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:44:18,283 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:44:18,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 13 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:44:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 03:44:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 03:44:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 03:44:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 03:44:18,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2024-11-14 03:44:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:44:18,285 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 03:44:18,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 03:44:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 03:44:18,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 03:44:18,289 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-14 03:44:18,289 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-14 03:44:18,290 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-14 03:44:18,291 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-14 03:44:18,291 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-14 03:44:18,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:44:18,294 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-14 03:44:18,300 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-14 03:44:18,300 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:44:18,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:44:18 BasicIcfg [2024-11-14 03:44:18,307 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:44:18,308 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:44:18,308 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:44:18,308 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:44:18,311 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:44:16" (3/4) ... [2024-11-14 03:44:18,313 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 03:44:18,316 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-11-14 03:44:18,320 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-11-14 03:44:18,320 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-14 03:44:18,320 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-14 03:44:18,320 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 03:44:18,410 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:44:18,410 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 03:44:18,410 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:44:18,412 INFO L158 Benchmark]: Toolchain (without parser) took 3625.75ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 32.0MB in the end (delta: 59.7MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2024-11-14 03:44:18,412 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:44:18,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.52ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 71.3MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:44:18,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.87ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 69.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:44:18,416 INFO L158 Benchmark]: Boogie Preprocessor took 36.32ms. Allocated memory is still 117.4MB. Free memory was 69.5MB in the beginning and 68.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:44:18,416 INFO L158 Benchmark]: RCFGBuilder took 690.12ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 41.1MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 03:44:18,418 INFO L158 Benchmark]: TraceAbstraction took 2237.51ms. Allocated memory is still 117.4MB. Free memory was 40.6MB in the beginning and 36.5MB in the end (delta: 4.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2024-11-14 03:44:18,418 INFO L158 Benchmark]: Witness Printer took 102.49ms. Allocated memory is still 117.4MB. Free memory was 36.5MB in the beginning and 32.0MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:44:18,419 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.52ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 71.3MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.87ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 69.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.32ms. Allocated memory is still 117.4MB. Free memory was 69.5MB in the beginning and 68.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 690.12ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 41.1MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2237.51ms. Allocated memory is still 117.4MB. Free memory was 40.6MB in the beginning and 36.5MB in the end (delta: 4.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Witness Printer took 102.49ms. Allocated memory is still 117.4MB. Free memory was 36.5MB in the beginning and 32.0MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 50 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 31 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-14 03:44:18,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70a9926-b6f1-4054-89b7-384edfd9ddb8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE