./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.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_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/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_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/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_b2a5d269-f12f-48dc-b568-955def38d0bb/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 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:03:15,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:03:15,294 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:03:15,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:03:15,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:03:15,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:03:15,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:03:15,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:03:15,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:03:15,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:03:15,348 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:03:15,348 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:03:15,348 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:03:15,349 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:03:15,349 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:03:15,350 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:03:15,350 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:03:15,351 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:03:15,351 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:03:15,351 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:03:15,351 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:03:15,351 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:03:15,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:03:15,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:03:15,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:03:15,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:03:15,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:03:15,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:03:15,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:03:15,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:03:15,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:03:15,353 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:03:15,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:03:15,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:03:15,355 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:03:15,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:03:15,355 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_b2a5d269-f12f-48dc-b568-955def38d0bb/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 -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-14 05:03:15,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:03:15,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:03:15,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:03:15,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:03:15,736 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:03:15,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i Unable to find full path for "g++" [2024-11-14 05:03:17,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:03:18,114 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:03:18,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-14 05:03:18,144 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/data/f6251abb4/d506ad32f46e4a18a6d3cdc76e7c82bd/FLAG909d58e91 [2024-11-14 05:03:18,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/data/f6251abb4/d506ad32f46e4a18a6d3cdc76e7c82bd [2024-11-14 05:03:18,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:03:18,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:03:18,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:03:18,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:03:18,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:03:18,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f6b08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18, skipping insertion in model container [2024-11-14 05:03:18,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:03:18,612 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_b2a5d269-f12f-48dc-b568-955def38d0bb/sv-benchmarks/c/pthread-theta/unwind2-nondet.i[33026,33039] [2024-11-14 05:03:18,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:03:18,647 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:03:18,703 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_b2a5d269-f12f-48dc-b568-955def38d0bb/sv-benchmarks/c/pthread-theta/unwind2-nondet.i[33026,33039] [2024-11-14 05:03:18,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:03:18,755 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:03:18,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18 WrapperNode [2024-11-14 05:03:18,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:03:18,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:03:18,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:03:18,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:03:18,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,811 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2024-11-14 05:03:18,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:03:18,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:03:18,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:03:18,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:03:18,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:03:18,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:03:18,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:03:18,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:03:18,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (1/1) ... [2024-11-14 05:03:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:03:18,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:18,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:03:18,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:03:18,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:03:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-14 05:03:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-14 05:03:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-14 05:03:18,958 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-14 05:03:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:03:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:03:18,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:03:18,960 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 05:03:19,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:03:19,172 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:03:19,421 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 05:03:19,421 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:03:19,582 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:03:19,583 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:03:19,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:19 BoogieIcfgContainer [2024-11-14 05:03:19,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:03:19,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:03:19,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:03:19,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:03:19,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:03:18" (1/3) ... [2024-11-14 05:03:19,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564a52e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:03:19, skipping insertion in model container [2024-11-14 05:03:19,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:18" (2/3) ... [2024-11-14 05:03:19,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564a52e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:03:19, skipping insertion in model container [2024-11-14 05:03:19,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:19" (3/3) ... [2024-11-14 05:03:19,600 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-14 05:03:19,621 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:03:19,626 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:03:19,626 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 05:03:19,707 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-14 05:03:19,760 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 30 transitions, 74 flow [2024-11-14 05:03:19,822 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 181 states, 178 states have (on average 2.6235955056179776) internal successors, (467), 180 states have internal predecessors, (467), 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 05:03:19,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:03:19,905 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;@4cd9514e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:03:19,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-14 05:03:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 178 states have (on average 2.6235955056179776) internal successors, (467), 180 states have internal predecessors, (467), 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 05:03:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:03:19,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:19,922 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:19,923 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-14 05:03:19,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2116344577, now seen corresponding path program 1 times [2024-11-14 05:03:19,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:19,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020839965] [2024-11-14 05:03:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:19,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:20,637 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 05:03:20,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:20,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020839965] [2024-11-14 05:03:20,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020839965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:20,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:20,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:03:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633262262] [2024-11-14 05:03:20,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:20,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:03:20,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:03:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:03:20,676 INFO L87 Difference]: Start difference. First operand has 181 states, 178 states have (on average 2.6235955056179776) internal successors, (467), 180 states have internal predecessors, (467), 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 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 05:03:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:21,391 INFO L93 Difference]: Finished difference Result 507 states and 1302 transitions. [2024-11-14 05:03:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:03:21,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2024-11-14 05:03:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:21,419 INFO L225 Difference]: With dead ends: 507 [2024-11-14 05:03:21,419 INFO L226 Difference]: Without dead ends: 400 [2024-11-14 05:03:21,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:03:21,429 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 139 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:21,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 74 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:03:21,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-14 05:03:21,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 231. [2024-11-14 05:03:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 228 states have (on average 2.526315789473684) internal successors, (576), 230 states have internal predecessors, (576), 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 05:03:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 576 transitions. [2024-11-14 05:03:21,604 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 576 transitions. Word has length 8 [2024-11-14 05:03:21,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:21,607 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 576 transitions. [2024-11-14 05:03:21,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 05:03:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 576 transitions. [2024-11-14 05:03:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 05:03:21,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:21,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:21,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:03:21,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-14 05:03:21,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1182141858, now seen corresponding path program 1 times [2024-11-14 05:03:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:21,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191790895] [2024-11-14 05:03:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:21,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191790895] [2024-11-14 05:03:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191790895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779706205] [2024-11-14 05:03:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:21,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:21,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:21,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:03:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:22,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:03:22,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:22,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:03:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779706205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:22,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:03:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-14 05:03:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883073878] [2024-11-14 05:03:22,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:22,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:03:22,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:03:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:03:22,135 INFO L87 Difference]: Start difference. First operand 231 states and 576 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 05:03:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:22,539 INFO L93 Difference]: Finished difference Result 453 states and 1116 transitions. [2024-11-14 05:03:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:03:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 05:03:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:22,545 INFO L225 Difference]: With dead ends: 453 [2024-11-14 05:03:22,546 INFO L226 Difference]: Without dead ends: 377 [2024-11-14 05:03:22,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:03:22,551 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 95 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:22,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 74 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:03:22,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-14 05:03:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 191. [2024-11-14 05:03:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 188 states have (on average 2.521276595744681) internal successors, (474), 190 states have internal predecessors, (474), 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 05:03:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 474 transitions. [2024-11-14 05:03:22,611 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 474 transitions. Word has length 9 [2024-11-14 05:03:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:22,611 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 474 transitions. [2024-11-14 05:03:22,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 05:03:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 474 transitions. [2024-11-14 05:03:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 05:03:22,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:22,612 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:22,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:03:22,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:22,813 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-14 05:03:22,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1169237767, now seen corresponding path program 1 times [2024-11-14 05:03:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828081490] [2024-11-14 05:03:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:23,004 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 05:03:23,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828081490] [2024-11-14 05:03:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828081490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:23,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:23,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:03:23,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894716193] [2024-11-14 05:03:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:23,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:03:23,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:03:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:03:23,007 INFO L87 Difference]: Start difference. First operand 191 states and 474 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 05:03:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:23,319 INFO L93 Difference]: Finished difference Result 365 states and 921 transitions. [2024-11-14 05:03:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:03:23,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2024-11-14 05:03:23,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:23,326 INFO L225 Difference]: With dead ends: 365 [2024-11-14 05:03:23,326 INFO L226 Difference]: Without dead ends: 270 [2024-11-14 05:03:23,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:03:23,328 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 83 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:23,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 34 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:03:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-14 05:03:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 225. [2024-11-14 05:03:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 222 states have (on average 2.5225225225225225) internal successors, (560), 224 states have internal predecessors, (560), 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 05:03:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 560 transitions. [2024-11-14 05:03:23,402 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 560 transitions. Word has length 10 [2024-11-14 05:03:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:23,402 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 560 transitions. [2024-11-14 05:03:23,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 05:03:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 560 transitions. [2024-11-14 05:03:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:03:23,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:23,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:23,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:03:23,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-14 05:03:23,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1886662988, now seen corresponding path program 1 times [2024-11-14 05:03:23,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752015222] [2024-11-14 05:03:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:23,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:23,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752015222] [2024-11-14 05:03:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752015222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:23,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779024309] [2024-11-14 05:03:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:23,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:23,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:23,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:03:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:23,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:03:23,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:24,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:24,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779024309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122298659] [2024-11-14 05:03:24,313 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:03:24,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:03:24,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-14 05:03:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880138115] [2024-11-14 05:03:24,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:03:24,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 05:03:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 05:03:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:03:24,324 INFO L87 Difference]: Start difference. First operand 225 states and 560 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 14 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 05:03:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:25,071 INFO L93 Difference]: Finished difference Result 408 states and 1029 transitions. [2024-11-14 05:03:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:03:25,072 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 14 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 11 [2024-11-14 05:03:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:25,075 INFO L225 Difference]: With dead ends: 408 [2024-11-14 05:03:25,076 INFO L226 Difference]: Without dead ends: 334 [2024-11-14 05:03:25,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:03:25,078 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 183 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:25,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 111 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:03:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-14 05:03:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 260. [2024-11-14 05:03:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 257 states have (on average 2.5642023346303504) internal successors, (659), 259 states have internal predecessors, (659), 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 05:03:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 659 transitions. [2024-11-14 05:03:25,131 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 659 transitions. Word has length 11 [2024-11-14 05:03:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:25,132 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 659 transitions. [2024-11-14 05:03:25,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 14 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 05:03:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 659 transitions. [2024-11-14 05:03:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 05:03:25,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:25,134 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:25,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:03:25,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:25,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-14 05:03:25,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:25,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1642958937, now seen corresponding path program 2 times [2024-11-14 05:03:25,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:25,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028059973] [2024-11-14 05:03:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:25,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:03:25,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:25,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028059973] [2024-11-14 05:03:25,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028059973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:25,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459598122] [2024-11-14 05:03:25,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:03:25,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:25,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:25,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:25,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:03:25,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:03:25,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:03:25,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:03:25,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:03:25,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:03:25,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459598122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:03:25,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-14 05:03:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669486982] [2024-11-14 05:03:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:25,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:03:25,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:03:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:03:25,669 INFO L87 Difference]: Start difference. First operand 260 states and 659 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 05:03:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:26,018 INFO L93 Difference]: Finished difference Result 340 states and 864 transitions. [2024-11-14 05:03:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:03:26,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2024-11-14 05:03:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:26,025 INFO L225 Difference]: With dead ends: 340 [2024-11-14 05:03:26,025 INFO L226 Difference]: Without dead ends: 159 [2024-11-14 05:03:26,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:03:26,030 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:26,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 61 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:03:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-14 05:03:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 139. [2024-11-14 05:03:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 2.4014598540145986) internal successors, (329), 138 states have internal predecessors, (329), 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 05:03:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 329 transitions. [2024-11-14 05:03:26,075 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 329 transitions. Word has length 12 [2024-11-14 05:03:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:26,076 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 329 transitions. [2024-11-14 05:03:26,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 05:03:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 329 transitions. [2024-11-14 05:03:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 05:03:26,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:26,077 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:26,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:03:26,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:26,278 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-14 05:03:26,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1288297082, now seen corresponding path program 1 times [2024-11-14 05:03:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:26,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389158628] [2024-11-14 05:03:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:03:26,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:03:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:03:26,323 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:03:26,324 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:03:26,325 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-11-14 05:03:26,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2024-11-14 05:03:26,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-14 05:03:26,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-14 05:03:26,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-14 05:03:26,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-14 05:03:26,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:03:26,332 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-14 05:03:26,377 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-14 05:03:26,379 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:03:26,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:03:26 BasicIcfg [2024-11-14 05:03:26,385 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:03:26,386 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:03:26,386 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:03:26,386 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:03:26,387 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:19" (3/4) ... [2024-11-14 05:03:26,388 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 05:03:26,452 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:03:26,453 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:03:26,455 INFO L158 Benchmark]: Toolchain (without parser) took 8288.21ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 76.7MB in the end (delta: 14.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2024-11-14 05:03:26,455 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:03:26,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 590.20ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 71.1MB in the end (delta: 20.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:03:26,459 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.39ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 69.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:03:26,460 INFO L158 Benchmark]: Boogie Preprocessor took 51.46ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 68.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:03:26,460 INFO L158 Benchmark]: RCFGBuilder took 717.80ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 48.4MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:03:26,461 INFO L158 Benchmark]: TraceAbstraction took 6798.75ms. Allocated memory is still 117.4MB. Free memory was 48.0MB in the beginning and 80.1MB in the end (delta: -32.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:03:26,462 INFO L158 Benchmark]: Witness Printer took 67.21ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 76.7MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:03:26,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 590.20ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 71.1MB in the end (delta: 20.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.39ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 69.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.46ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 68.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 717.80ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 48.4MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6798.75ms. Allocated memory is still 117.4MB. Free memory was 48.0MB in the beginning and 80.1MB in the end (delta: -32.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 67.21ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 76.7MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 753]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = __VERIFIER_nondet_int() [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=0, limit=0, t1=-1] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=0, limit=0, t1=-1, t2=0] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=1] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=1] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression VAL [\old(expression)=0, _N=0, expression=0, limit=0] [L753] 2 reach_error() VAL [\old(expression)=0, _N=0, expression=0, limit=0] - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 753]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 6.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 563 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 563 mSDsluCounter, 354 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 248 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1006 IncrementalHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 106 mSDtfsCounter, 1006 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=4, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 494 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 344 SizeOfPredicates, 16 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 5/11 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-14 05:03:26,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2a5d269-f12f-48dc-b568-955def38d0bb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE