./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/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_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:52:38,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:52:38,123 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 02:52:38,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:52:38,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:52:38,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:52:38,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:52:38,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:52:38,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:52:38,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:52:38,160 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:52:38,160 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:52:38,160 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:52:38,160 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:52:38,160 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:52:38,161 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:52:38,161 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:52:38,161 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:52:38,161 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:52:38,162 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:52:38,162 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:52:38,162 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:52:38,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:52:38,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:52:38,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:52:38,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:52:38,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:52:38,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:52:38,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:52:38,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:52:38,165 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:52:38,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:52:38,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:52:38,165 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:52:38,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:52:38,166 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_2834bf12-501d-4c3d-ae8a-0e2860726587/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 [2024-11-14 02:52:38,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:52:38,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:52:38,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:52:38,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:52:38,592 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:52:38,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i Unable to find full path for "g++" [2024-11-14 02:52:41,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:52:41,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:52:41,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-14 02:52:41,522 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data/fa1208dcb/8e218a81a1ba4fcf9061a9085a377066/FLAG6a9b51f18 [2024-11-14 02:52:41,550 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data/fa1208dcb/8e218a81a1ba4fcf9061a9085a377066 [2024-11-14 02:52:41,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:52:41,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:52:41,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:52:41,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:52:41,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:52:41,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:52:41" (1/1) ... [2024-11-14 02:52:41,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1185db49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:41, skipping insertion in model container [2024-11-14 02:52:41,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:52:41" (1/1) ... [2024-11-14 02:52:41,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:52:42,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:52:42,145 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:52:42,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:52:42,263 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:52:42,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42 WrapperNode [2024-11-14 02:52:42,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:52:42,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:52:42,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:52:42,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:52:42,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,333 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2024-11-14 02:52:42,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:52:42,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:52:42,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:52:42,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:52:42,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:52:42,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:52:42,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:52:42,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:52:42,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (1/1) ... [2024-11-14 02:52:42,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:52:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:42,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:52:42,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:52:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:52:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-14 02:52:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-14 02:52:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-14 02:52:42,478 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-14 02:52:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:52:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:52:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:52:42,481 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 02:52:42,673 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:52:42,675 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:52:42,947 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 02:52:42,948 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:52:43,134 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:52:43,134 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:52:43,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:52:43 BoogieIcfgContainer [2024-11-14 02:52:43,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:52:43,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:52:43,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:52:43,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:52:43,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:52:41" (1/3) ... [2024-11-14 02:52:43,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658f3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:52:43, skipping insertion in model container [2024-11-14 02:52:43,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:42" (2/3) ... [2024-11-14 02:52:43,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658f3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:52:43, skipping insertion in model container [2024-11-14 02:52:43,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:52:43" (3/3) ... [2024-11-14 02:52:43,151 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2024-11-14 02:52:43,172 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:52:43,175 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-nondet.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-14 02:52:43,175 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 02:52:43,282 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-14 02:52:43,318 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 29 transitions, 72 flow [2024-11-14 02:52:43,373 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 134 states, 132 states have (on average 2.5984848484848486) internal successors, (343), 133 states have internal predecessors, (343), 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 02:52:43,404 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:52:43,422 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=None, 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;@315f4678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:52:43,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-14 02:52:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 2.5984848484848486) internal successors, (343), 133 states have internal predecessors, (343), 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 02:52:43,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 02:52:43,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:43,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:43,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:52:43,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash -239888674, now seen corresponding path program 1 times [2024-11-14 02:52:43,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:43,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024271589] [2024-11-14 02:52:43,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:52:44,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:52:44,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024271589] [2024-11-14 02:52:44,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024271589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:52:44,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:52:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:52:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082265911] [2024-11-14 02:52:44,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:52:44,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:52:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:52:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:52:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:52:44,072 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 2.5984848484848486) internal successors, (343), 133 states have internal predecessors, (343), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 02:52:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:44,406 INFO L93 Difference]: Finished difference Result 257 states and 650 transitions. [2024-11-14 02:52:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:52:44,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 02:52:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:44,429 INFO L225 Difference]: With dead ends: 257 [2024-11-14 02:52:44,429 INFO L226 Difference]: Without dead ends: 176 [2024-11-14 02:52:44,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:52:44,443 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 57 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:44,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 13 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:52:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-14 02:52:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2024-11-14 02:52:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 145 states have (on average 2.496551724137931) internal successors, (362), 146 states have internal predecessors, (362), 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 02:52:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 362 transitions. [2024-11-14 02:52:44,528 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 362 transitions. Word has length 9 [2024-11-14 02:52:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:44,529 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 362 transitions. [2024-11-14 02:52:44,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 02:52:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 362 transitions. [2024-11-14 02:52:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:52:44,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:44,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:44,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:52:44,534 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:52:44,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1152399861, now seen corresponding path program 1 times [2024-11-14 02:52:44,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:44,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939221009] [2024-11-14 02:52:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:44,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:44,776 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 02:52:44,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:52:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939221009] [2024-11-14 02:52:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939221009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:52:44,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:52:44,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:52:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513579388] [2024-11-14 02:52:44,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:52:44,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:52:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:52:44,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:52:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:52:44,783 INFO L87 Difference]: Start difference. First operand 147 states and 362 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:52:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:44,946 INFO L93 Difference]: Finished difference Result 224 states and 514 transitions. [2024-11-14 02:52:44,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:52:44,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:52:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:44,949 INFO L225 Difference]: With dead ends: 224 [2024-11-14 02:52:44,949 INFO L226 Difference]: Without dead ends: 130 [2024-11-14 02:52:44,950 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 02:52:44,951 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:44,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 26 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:52:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-14 02:52:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2024-11-14 02:52:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 2.2363636363636363) internal successors, (246), 111 states have internal predecessors, (246), 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 02:52:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 246 transitions. [2024-11-14 02:52:45,002 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 246 transitions. Word has length 10 [2024-11-14 02:52:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:45,003 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 246 transitions. [2024-11-14 02:52:45,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:52:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 246 transitions. [2024-11-14 02:52:45,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 02:52:45,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:45,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:45,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:52:45,005 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:52:45,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash -151781555, now seen corresponding path program 1 times [2024-11-14 02:52:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:45,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776348717] [2024-11-14 02:52:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:45,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:45,228 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 02:52:45,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:52:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776348717] [2024-11-14 02:52:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776348717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:52:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60488262] [2024-11-14 02:52:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:45,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:45,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:45,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:52:45,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:52:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:45,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 02:52:45,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:45,469 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 02:52:45,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:45,562 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 02:52:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60488262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:52:45,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [557109228] [2024-11-14 02:52:45,577 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 02:52:45,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:52:45,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-14 02:52:45,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235147299] [2024-11-14 02:52:45,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:52:45,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:52:45,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:52:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:52:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:52:45,586 INFO L87 Difference]: Start difference. First operand 112 states and 246 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 02:52:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:45,930 INFO L93 Difference]: Finished difference Result 205 states and 416 transitions. [2024-11-14 02:52:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:52:45,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 02:52:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:45,934 INFO L225 Difference]: With dead ends: 205 [2024-11-14 02:52:45,937 INFO L226 Difference]: Without dead ends: 190 [2024-11-14 02:52:45,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:52:45,939 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 65 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:45,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 31 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:52:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-14 02:52:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 126. [2024-11-14 02:52:45,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 124 states have (on average 2.2338709677419355) internal successors, (277), 125 states have internal predecessors, (277), 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 02:52:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 277 transitions. [2024-11-14 02:52:45,961 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 277 transitions. Word has length 13 [2024-11-14 02:52:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:45,961 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 277 transitions. [2024-11-14 02:52:45,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 02:52:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 277 transitions. [2024-11-14 02:52:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 02:52:45,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:45,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:45,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:52:46,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:46,168 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:52:46,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:46,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2139217773, now seen corresponding path program 1 times [2024-11-14 02:52:46,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:46,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170496424] [2024-11-14 02:52:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:46,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:52:46,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:52:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:52:46,226 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 02:52:46,226 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 02:52:46,227 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2024-11-14 02:52:46,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-14 02:52:46,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-14 02:52:46,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-14 02:52:46,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-14 02:52:46,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 02:52:46,235 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-14 02:52:46,282 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-14 02:52:46,282 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 02:52:46,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 02:52:46 BasicIcfg [2024-11-14 02:52:46,287 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 02:52:46,288 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 02:52:46,288 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 02:52:46,289 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 02:52:46,290 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:52:43" (3/4) ... [2024-11-14 02:52:46,293 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 02:52:46,294 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 02:52:46,296 INFO L158 Benchmark]: Toolchain (without parser) took 4739.31ms. Allocated memory is still 109.1MB. Free memory was 82.1MB in the beginning and 35.3MB in the end (delta: 46.8MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2024-11-14 02:52:46,296 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:52:46,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.24ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 62.1MB in the end (delta: 19.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:52:46,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.22ms. Allocated memory is still 109.1MB. Free memory was 62.1MB in the beginning and 60.6MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:52:46,302 INFO L158 Benchmark]: Boogie Preprocessor took 46.68ms. Allocated memory is still 109.1MB. Free memory was 60.2MB in the beginning and 59.4MB in the end (delta: 779.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:52:46,302 INFO L158 Benchmark]: RCFGBuilder took 749.22ms. Allocated memory is still 109.1MB. Free memory was 59.4MB in the beginning and 40.4MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:52:46,303 INFO L158 Benchmark]: TraceAbstraction took 3149.01ms. Allocated memory is still 109.1MB. Free memory was 39.7MB in the beginning and 35.3MB in the end (delta: 4.4MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-11-14 02:52:46,303 INFO L158 Benchmark]: Witness Printer took 5.54ms. Allocated memory is still 109.1MB. Free memory is still 35.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:52:46,305 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.24ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 62.1MB in the end (delta: 19.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.22ms. Allocated memory is still 109.1MB. Free memory was 62.1MB in the beginning and 60.6MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.68ms. Allocated memory is still 109.1MB. Free memory was 60.2MB in the beginning and 59.4MB in the end (delta: 779.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 749.22ms. Allocated memory is still 109.1MB. Free memory was 59.4MB in the beginning and 40.4MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3149.01ms. Allocated memory is still 109.1MB. Free memory was 39.7MB in the beginning and 35.3MB in the end (delta: 4.4MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Witness Printer took 5.54ms. Allocated memory is still 109.1MB. Free memory is still 35.3MB. 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 - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L772] 0 _N = __VERIFIER_nondet_int() [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=0, limit=0, t1=-1] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1, t1=-1, t2=0] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind1.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] - UnprovableResult [Line: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 775]: 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: 776]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 311 IncrementalHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 22 mSDtfsCounter, 311 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=1, InterpolantAutomatonStates: 21, 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, 3 MinimizatonAttempts, 111 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 6 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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 could not prove your program: unable to determine feasibility of some traces [2024-11-14 02:52:46,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/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_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:52:49,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:52:49,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 02:52:49,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:52:49,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:52:49,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:52:49,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:52:49,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:52:49,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:52:49,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:52:49,748 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:52:49,748 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:52:49,748 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:52:49,748 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:52:49,749 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:52:49,749 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:52:49,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:52:49,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:52:49,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:52:49,750 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:52:49,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:52:49,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:52:49,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:52:49,751 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:52:49,752 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:52:49,752 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:52:49,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:52:49,752 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:52:49,752 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 02:52:49,752 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:52:49,752 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 02:52:49,753 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:52:49,753 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:52:49,753 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:52:49,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:52:49,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 02:52:49,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:52:49,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:52:49,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:52:49,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:52:49,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:52:49,756 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 02:52:49,756 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 02:52:49,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:52:49,756 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:52:49,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2834bf12-501d-4c3d-ae8a-0e2860726587/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 [2024-11-14 02:52:50,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:52:50,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:52:50,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:52:50,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:52:50,203 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:52:50,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i Unable to find full path for "g++" [2024-11-14 02:52:52,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:52:53,062 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:52:53,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-14 02:52:53,100 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data/0d19fec2a/c143d995c30247278e45c23fb64bcfc1/FLAGabaf3ac12 [2024-11-14 02:52:53,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/data/0d19fec2a/c143d995c30247278e45c23fb64bcfc1 [2024-11-14 02:52:53,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:52:53,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:52:53,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:52:53,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:52:53,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:52:53,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:53,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786b710b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53, skipping insertion in model container [2024-11-14 02:52:53,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:53,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:52:53,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:52:53,790 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:52:53,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:52:53,927 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:52:53,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53 WrapperNode [2024-11-14 02:52:53,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:52:53,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:52:53,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:52:53,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:52:53,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:53,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:53,984 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2024-11-14 02:52:53,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:52:53,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:52:53,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:52:53,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:52:53,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:53,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:53,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:53,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:54,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:54,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:54,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:54,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:54,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:52:54,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:52:54,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:52:54,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:52:54,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (1/1) ... [2024-11-14 02:52:54,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:52:54,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:54,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:52:54,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:52:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:52:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-14 02:52:54,101 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-14 02:52:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-14 02:52:54,102 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-14 02:52:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 02:52:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:52:54,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:52:54,104 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 02:52:54,335 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:52:54,337 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:52:54,612 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 02:52:54,613 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:52:54,857 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:52:54,857 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:52:54,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:52:54 BoogieIcfgContainer [2024-11-14 02:52:54,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:52:54,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:52:54,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:52:54,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:52:54,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:52:53" (1/3) ... [2024-11-14 02:52:54,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702dfbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:52:54, skipping insertion in model container [2024-11-14 02:52:54,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:52:53" (2/3) ... [2024-11-14 02:52:54,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702dfbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:52:54, skipping insertion in model container [2024-11-14 02:52:54,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:52:54" (3/3) ... [2024-11-14 02:52:54,873 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2024-11-14 02:52:54,895 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:52:54,897 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-nondet.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-14 02:52:54,897 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 02:52:54,967 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-14 02:52:55,042 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 29 transitions, 72 flow [2024-11-14 02:52:55,092 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 134 states, 132 states have (on average 2.5984848484848486) internal successors, (343), 133 states have internal predecessors, (343), 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 02:52:55,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:52:55,152 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=None, 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;@79952efe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:52:55,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-14 02:52:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 2.5984848484848486) internal successors, (343), 133 states have internal predecessors, (343), 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 02:52:55,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 02:52:55,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:55,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:55,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:52:55,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1944774692, now seen corresponding path program 1 times [2024-11-14 02:52:55,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:52:55,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420937964] [2024-11-14 02:52:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:55,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:52:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:52:55,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:52:55,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 02:52:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:55,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:52:55,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:52:55,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:52:55,598 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:52:55,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420937964] [2024-11-14 02:52:55,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420937964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:52:55,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:52:55,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:52:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751110715] [2024-11-14 02:52:55,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:52:55,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:52:55,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:52:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:52:55,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:52:55,649 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 2.5984848484848486) internal successors, (343), 133 states have internal predecessors, (343), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 02:52:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:55,930 INFO L93 Difference]: Finished difference Result 257 states and 650 transitions. [2024-11-14 02:52:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:52:55,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 02:52:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:55,944 INFO L225 Difference]: With dead ends: 257 [2024-11-14 02:52:55,945 INFO L226 Difference]: Without dead ends: 176 [2024-11-14 02:52:55,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:52:55,952 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 48 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:55,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 13 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:52:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-14 02:52:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2024-11-14 02:52:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 145 states have (on average 2.496551724137931) internal successors, (362), 146 states have internal predecessors, (362), 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 02:52:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 362 transitions. [2024-11-14 02:52:56,038 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 362 transitions. Word has length 9 [2024-11-14 02:52:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:56,040 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 362 transitions. [2024-11-14 02:52:56,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 02:52:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 362 transitions. [2024-11-14 02:52:56,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:52:56,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:56,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:56,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 02:52:56,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:52:56,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:52:56,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -159459147, now seen corresponding path program 1 times [2024-11-14 02:52:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:52:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643561311] [2024-11-14 02:52:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:56,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:52:56,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:52:56,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:52:56,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 02:52:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:56,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:52:56,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:56,406 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 02:52:56,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:52:56,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:52:56,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643561311] [2024-11-14 02:52:56,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643561311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:52:56,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:52:56,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:52:56,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908849587] [2024-11-14 02:52:56,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:52:56,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:52:56,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:52:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:52:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:52:56,409 INFO L87 Difference]: Start difference. First operand 147 states and 362 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:52:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:56,613 INFO L93 Difference]: Finished difference Result 224 states and 514 transitions. [2024-11-14 02:52:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:52:56,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:52:56,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:56,616 INFO L225 Difference]: With dead ends: 224 [2024-11-14 02:52:56,619 INFO L226 Difference]: Without dead ends: 130 [2024-11-14 02:52:56,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 02:52:56,621 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:56,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 26 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:52:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-14 02:52:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2024-11-14 02:52:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 2.2363636363636363) internal successors, (246), 111 states have internal predecessors, (246), 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 02:52:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 246 transitions. [2024-11-14 02:52:56,650 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 246 transitions. Word has length 10 [2024-11-14 02:52:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:56,651 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 246 transitions. [2024-11-14 02:52:56,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:52:56,651 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 246 transitions. [2024-11-14 02:52:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 02:52:56,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:56,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:56,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 02:52:56,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:52:56,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:52:56,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1836064565, now seen corresponding path program 1 times [2024-11-14 02:52:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:52:56,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213855030] [2024-11-14 02:52:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:56,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:52:56,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:52:56,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:52:56,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 02:52:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:56,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:52:56,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:57,333 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 02:52:57,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:57,496 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 02:52:57,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:52:57,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213855030] [2024-11-14 02:52:57,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213855030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:52:57,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [772485816] [2024-11-14 02:52:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:57,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:52:57,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:52:57,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:52:57,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-14 02:52:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:57,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:52:57,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:57,888 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 02:52:57,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:58,149 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 02:52:58,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [772485816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:52:58,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315955543] [2024-11-14 02:52:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:58,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:58,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:58,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:52:58,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:52:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:58,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 02:52:58,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:58,485 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 02:52:58,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:58,586 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 02:52:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315955543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:52:58,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:52:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 18 [2024-11-14 02:52:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265636509] [2024-11-14 02:52:58,587 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:52:58,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 02:52:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:52:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 02:52:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-14 02:52:58,591 INFO L87 Difference]: Start difference. First operand 112 states and 246 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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 02:53:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:53:00,440 INFO L93 Difference]: Finished difference Result 271 states and 552 transitions. [2024-11-14 02:53:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 02:53:00,441 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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 02:53:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:53:00,444 INFO L225 Difference]: With dead ends: 271 [2024-11-14 02:53:00,444 INFO L226 Difference]: Without dead ends: 256 [2024-11-14 02:53:00,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=338, Invalid=852, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 02:53:00,447 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 283 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:53:00,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 56 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 02:53:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-14 02:53:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 136. [2024-11-14 02:53:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 134 states have (on average 2.291044776119403) internal successors, (307), 135 states have internal predecessors, (307), 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 02:53:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 307 transitions. [2024-11-14 02:53:00,494 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 307 transitions. Word has length 13 [2024-11-14 02:53:00,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:53:00,494 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 307 transitions. [2024-11-14 02:53:00,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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 02:53:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 307 transitions. [2024-11-14 02:53:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 02:53:00,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:53:00,496 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:53:00,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 02:53:00,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-14 02:53:00,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 02:53:01,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:53:01,100 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 02:53:01,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:53:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash 454934763, now seen corresponding path program 1 times [2024-11-14 02:53:01,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:53:01,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436642079] [2024-11-14 02:53:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:53:01,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:53:01,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:53:01,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:53:01,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 02:53:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:53:01,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:53:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:53:01,218 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 02:53:01,219 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 02:53:01,220 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2024-11-14 02:53:01,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-14 02:53:01,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-14 02:53:01,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-14 02:53:01,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-14 02:53:01,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-14 02:53:01,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:53:01,429 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-14 02:53:01,461 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-14 02:53:01,461 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 02:53:01,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 02:53:01 BasicIcfg [2024-11-14 02:53:01,464 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 02:53:01,465 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 02:53:01,465 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 02:53:01,465 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 02:53:01,466 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:52:54" (3/4) ... [2024-11-14 02:53:01,468 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 02:53:01,468 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 02:53:01,469 INFO L158 Benchmark]: Toolchain (without parser) took 8335.75ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 77.4MB in the end (delta: 14.2MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-11-14 02:53:01,470 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:53:01,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 792.90ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 70.8MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 02:53:01,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.19ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 69.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:53:01,470 INFO L158 Benchmark]: Boogie Preprocessor took 31.24ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 68.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:53:01,471 INFO L158 Benchmark]: RCFGBuilder took 841.22ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 44.0MB in the end (delta: 24.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:53:01,471 INFO L158 Benchmark]: TraceAbstraction took 6601.94ms. Allocated memory is still 117.4MB. Free memory was 43.7MB in the beginning and 78.5MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:53:01,471 INFO L158 Benchmark]: Witness Printer took 3.77ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 77.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:53:01,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 792.90ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 70.8MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.19ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 69.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.24ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 68.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 841.22ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 44.0MB in the end (delta: 24.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6601.94ms. Allocated memory is still 117.4MB. Free memory was 43.7MB in the beginning and 78.5MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.77ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 77.4MB in the end (delta: 1.1MB). 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 - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L772] 0 _N = __VERIFIER_nondet_int() [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=0, limit=0, t1=0] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1, t1=0, t2=1] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind1.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] - UnprovableResult [Line: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 775]: 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: 776]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 357 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 547 IncrementalHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 23 mSDtfsCounter, 547 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=1, InterpolantAutomatonStates: 31, 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, 3 MinimizatonAttempts, 167 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 453 SizeOfPredicates, 20 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/7 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 could not prove your program: unable to determine feasibility of some traces [2024-11-14 02:53:01,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2834bf12-501d-4c3d-ae8a-0e2860726587/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: UNKNOWN: Overapproximated counterexample