./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:23:11,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:23:11,267 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:23:11,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:23:11,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:23:11,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:23:11,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:23:11,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:23:11,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:23:11,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:23:11,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:23:11,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:23:11,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:23:11,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:23:11,333 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:23:11,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:23:11,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:23:11,335 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:11,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:11,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:23:11,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:11,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:11,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:11,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:11,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:23:11,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:23:11,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:23:11,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:23:11,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:23:11,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:23:11,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:23:11,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:23:11,337 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 [2024-11-27 23:23:11,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:23:11,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:23:11,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:23:11,781 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:23:11,781 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:23:11,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-27 23:23:15,624 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/7c69b8fff/7a7a16a217c840dfab2b37c87aa22d38/FLAGae57aeb46 [2024-11-27 23:23:16,173 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:23:16,173 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-27 23:23:16,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/7c69b8fff/7a7a16a217c840dfab2b37c87aa22d38/FLAGae57aeb46 [2024-11-27 23:23:16,212 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/7c69b8fff/7a7a16a217c840dfab2b37c87aa22d38 [2024-11-27 23:23:16,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:23:16,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:23:16,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:16,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:23:16,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:23:16,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24aaf659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16, skipping insertion in model container [2024-11-27 23:23:16,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,291 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:23:16,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:16,814 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:23:16,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:16,903 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:23:16,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16 WrapperNode [2024-11-27 23:23:16,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:16,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:16,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:23:16,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:23:16,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,953 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2024-11-27 23:23:16,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:16,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:23:16,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:23:16,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:23:16,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,996 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:23:16,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:16,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:17,002 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:17,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:17,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:17,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:17,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:17,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:23:17,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:23:17,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:23:17,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:23:17,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (1/1) ... [2024-11-27 23:23:17,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:17,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:17,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:23:17,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:23:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:23:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-27 23:23:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-27 23:23:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-27 23:23:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-27 23:23:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:23:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:23:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:23:17,112 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:23:17,296 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:23:17,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:23:17,514 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:23:17,515 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:23:17,662 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:23:17,663 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:23:17,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:17 BoogieIcfgContainer [2024-11-27 23:23:17,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:23:17,666 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:23:17,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:23:17,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:23:17,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:23:16" (1/3) ... [2024-11-27 23:23:17,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789a8683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:17, skipping insertion in model container [2024-11-27 23:23:17,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:16" (2/3) ... [2024-11-27 23:23:17,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789a8683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:17, skipping insertion in model container [2024-11-27 23:23:17,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:17" (3/3) ... [2024-11-27 23:23:17,680 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2024-11-27 23:23:17,702 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:23:17,705 INFO L151 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. [2024-11-27 23:23:17,705 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:23:17,796 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:23:17,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-27 23:23:17,887 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-27 23:23:17,890 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:23:17,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-27 23:23:17,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-27 23:23:17,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-27 23:23:17,910 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:17,934 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=PETRI_NET, 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;@7d181a59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:17,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-27 23:23:17,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:23:17,961 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2024-11-27 23:23:17,961 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:23:17,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:17,963 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:17,963 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)] === [2024-11-27 23:23:17,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash 612554335, now seen corresponding path program 1 times [2024-11-27 23:23:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:17,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132856491] [2024-11-27 23:23:17,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:17,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:18,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132856491] [2024-11-27 23:23:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132856491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:18,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:23:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228818367] [2024-11-27 23:23:18,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:18,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:23:18,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:18,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:23:18,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:23:18,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 23:23:18,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-11-27 23:23:18,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:18,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 23:23:18,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:19,021 INFO L124 PetriNetUnfolderBase]: 152/302 cut-off events. [2024-11-27 23:23:19,022 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-27 23:23:19,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 302 events. 152/302 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1232 event pairs, 68 based on Foata normal form. 22/268 useless extension candidates. Maximal degree in co-relation 532. Up to 146 conditions per place. [2024-11-27 23:23:19,029 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 33 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-11-27 23:23:19,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 196 flow [2024-11-27 23:23:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-27 23:23:19,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2024-11-27 23:23:19,049 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 6 states and 91 transitions. [2024-11-27 23:23:19,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 196 flow [2024-11-27 23:23:19,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 180 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:23:19,065 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 91 flow [2024-11-27 23:23:19,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-11-27 23:23:19,073 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2024-11-27 23:23:19,074 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 91 flow [2024-11-27 23:23:19,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-11-27 23:23:19,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:19,074 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:19,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:23:19,075 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)] === [2024-11-27 23:23:19,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:19,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1808329365, now seen corresponding path program 1 times [2024-11-27 23:23:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:19,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620351908] [2024-11-27 23:23:19,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:19,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:19,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620351908] [2024-11-27 23:23:19,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620351908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:19,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824689607] [2024-11-27 23:23:19,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:19,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:23:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:19,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:23:19,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:23:19,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-27 23:23:19,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-27 23:23:19,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:19,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-27 23:23:19,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:19,493 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2024-11-27 23:23:19,493 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-27 23:23:19,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 247 events. 111/247 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 941 event pairs, 30 based on Foata normal form. 13/245 useless extension candidates. Maximal degree in co-relation 312. Up to 97 conditions per place. [2024-11-27 23:23:19,501 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-11-27 23:23:19,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 228 flow [2024-11-27 23:23:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:23:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:23:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-11-27 23:23:19,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-11-27 23:23:19,505 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 91 flow. Second operand 5 states and 73 transitions. [2024-11-27 23:23:19,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 228 flow [2024-11-27 23:23:19,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:19,513 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 127 flow [2024-11-27 23:23:19,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-11-27 23:23:19,516 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-11-27 23:23:19,517 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 127 flow [2024-11-27 23:23:19,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-27 23:23:19,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:19,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:19,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:23:19,518 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)] === [2024-11-27 23:23:19,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1863476060, now seen corresponding path program 1 times [2024-11-27 23:23:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:19,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530442811] [2024-11-27 23:23:19,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530442811] [2024-11-27 23:23:19,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530442811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:19,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535744915] [2024-11-27 23:23:19,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:19,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:19,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:19,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:19,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:23:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:19,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:23:19,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:19,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:20,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535744915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:20,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:20,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-27 23:23:20,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204500519] [2024-11-27 23:23:20,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:20,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:23:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:20,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:23:20,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:23:20,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-27 23:23:20,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-11-27 23:23:20,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:20,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-27 23:23:20,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:20,456 INFO L124 PetriNetUnfolderBase]: 202/422 cut-off events. [2024-11-27 23:23:20,456 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-27 23:23:20,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 422 events. 202/422 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1852 event pairs, 46 based on Foata normal form. 5/405 useless extension candidates. Maximal degree in co-relation 603. Up to 117 conditions per place. [2024-11-27 23:23:20,465 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 58 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2024-11-27 23:23:20,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 439 flow [2024-11-27 23:23:20,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:23:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 23:23:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-11-27 23:23:20,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4517241379310345 [2024-11-27 23:23:20,469 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 127 flow. Second operand 10 states and 131 transitions. [2024-11-27 23:23:20,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 439 flow [2024-11-27 23:23:20,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:20,482 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 247 flow [2024-11-27 23:23:20,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=247, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-11-27 23:23:20,484 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-11-27 23:23:20,484 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 247 flow [2024-11-27 23:23:20,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-11-27 23:23:20,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:20,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:20,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:23:20,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-27 23:23:20,686 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)] === [2024-11-27 23:23:20,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash 766837956, now seen corresponding path program 1 times [2024-11-27 23:23:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:20,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034530032] [2024-11-27 23:23:20,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:20,707 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:23:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:20,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:23:20,738 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:23:20,739 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2024-11-27 23:23:20,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-27 23:23:20,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-27 23:23:20,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-27 23:23:20,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-27 23:23:20,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:23:20,743 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-27 23:23:20,783 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 23:23:20,785 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:23:20,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:23:20 BasicIcfg [2024-11-27 23:23:20,796 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:23:20,796 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:23:20,797 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:23:20,797 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:23:20,799 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:17" (3/4) ... [2024-11-27 23:23:20,802 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 23:23:20,803 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:23:20,808 INFO L158 Benchmark]: Toolchain (without parser) took 4587.37ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 75.7MB in the end (delta: 23.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-27 23:23:20,808 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:20,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.55ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 79.5MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:23:20,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.66ms. Allocated memory is still 142.6MB. Free memory was 79.5MB in the beginning and 77.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:20,810 INFO L158 Benchmark]: Boogie Preprocessor took 59.62ms. Allocated memory is still 142.6MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:23:20,810 INFO L158 Benchmark]: RCFGBuilder took 649.42ms. Allocated memory is still 142.6MB. Free memory was 76.2MB in the beginning and 56.8MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:23:20,811 INFO L158 Benchmark]: TraceAbstraction took 3129.31ms. Allocated memory is still 142.6MB. Free memory was 56.1MB in the beginning and 75.8MB in the end (delta: -19.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:20,811 INFO L158 Benchmark]: Witness Printer took 7.09ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:20,813 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.55ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 79.5MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.66ms. Allocated memory is still 142.6MB. Free memory was 79.5MB in the beginning and 77.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.62ms. Allocated memory is still 142.6MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 649.42ms. Allocated memory is still 142.6MB. Free memory was 76.2MB in the beginning and 56.8MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3129.31ms. Allocated memory is still 142.6MB. Free memory was 56.1MB in the beginning and 75.8MB in the end (delta: -19.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.09ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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] [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=0, t1=-1, t2=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] [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. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299 IncrementalHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 3 mSDtfsCounter, 299 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=247occurred in iteration=3, 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: No data available, 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, 107 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 23:23:20,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:23:24,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:23:24,199 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 23:23:24,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:23:24,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:23:24,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:23:24,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:23:24,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:23:24,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:23:24,249 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:23:24,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:23:24,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:23:24,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:23:24,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:23:24,251 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:23:24,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:23:24,251 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:23:24,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:23:24,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:23:24,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:23:24,252 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:23:24,252 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:23:24,252 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:23:24,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:23:24,253 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:23:24,253 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:23:24,253 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:23:24,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:23:24,253 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:23:24,254 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:23:24,254 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:23:24,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:23:24,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:24,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:24,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:24,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:24,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:23:24,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:24,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:24,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:24,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:24,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:23:24,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:23:24,256 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:23:24,256 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:23:24,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:23:24,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:23:24,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:23:24,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:23:24,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 [2024-11-27 23:23:24,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:23:24,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:23:24,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:23:24,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:23:24,741 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:23:24,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-27 23:23:28,685 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/54023191c/ec01eefaffe045d78533b32a839c738e/FLAG11859e897 [2024-11-27 23:23:29,024 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:23:29,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-27 23:23:29,043 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/54023191c/ec01eefaffe045d78533b32a839c738e/FLAG11859e897 [2024-11-27 23:23:29,061 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/data/54023191c/ec01eefaffe045d78533b32a839c738e [2024-11-27 23:23:29,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:23:29,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:23:29,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:29,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:23:29,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:23:29,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b37fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29, skipping insertion in model container [2024-11-27 23:23:29,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:23:29,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:29,617 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:23:29,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:29,767 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:23:29,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29 WrapperNode [2024-11-27 23:23:29,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:29,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:29,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:23:29,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:23:29,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,833 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2024-11-27 23:23:29,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:29,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:23:29,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:23:29,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:23:29,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,882 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:23:29,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,899 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:23:29,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:23:29,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:23:29,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:23:29,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:29,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:29,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:23:29,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:23:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:23:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-27 23:23:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-27 23:23:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-27 23:23:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-27 23:23:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 23:23:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:23:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:23:30,029 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:23:30,268 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:23:30,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:23:30,527 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:23:30,527 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:23:30,767 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:23:30,767 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:23:30,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:30 BoogieIcfgContainer [2024-11-27 23:23:30,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:23:30,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:23:30,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:23:30,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:23:30,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:23:29" (1/3) ... [2024-11-27 23:23:30,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537dde10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:30, skipping insertion in model container [2024-11-27 23:23:30,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (2/3) ... [2024-11-27 23:23:30,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537dde10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:30, skipping insertion in model container [2024-11-27 23:23:30,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:30" (3/3) ... [2024-11-27 23:23:30,781 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2024-11-27 23:23:30,802 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:23:30,803 INFO L151 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. [2024-11-27 23:23:30,804 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:23:30,896 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:23:30,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-27 23:23:31,003 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-27 23:23:31,010 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:23:31,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-27 23:23:31,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-27 23:23:31,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-27 23:23:31,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:31,043 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=PETRI_NET, 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;@152e3c32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:31,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-27 23:23:31,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:23:31,062 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2024-11-27 23:23:31,062 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:23:31,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:31,063 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:31,064 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)] === [2024-11-27 23:23:31,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1092331683, now seen corresponding path program 1 times [2024-11-27 23:23:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:31,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473904191] [2024-11-27 23:23:31,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:31,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:31,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:31,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:31,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:23:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:31,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:23:31,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:31,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:31,529 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:31,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473904191] [2024-11-27 23:23:31,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473904191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:31,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:31,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:23:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403944217] [2024-11-27 23:23:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:31,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:23:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:31,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:23:31,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:23:31,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-27 23:23:31,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-27 23:23:31,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:31,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-27 23:23:31,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:32,013 INFO L124 PetriNetUnfolderBase]: 124/273 cut-off events. [2024-11-27 23:23:32,013 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-27 23:23:32,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 273 events. 124/273 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1193 event pairs, 68 based on Foata normal form. 33/265 useless extension candidates. Maximal degree in co-relation 460. Up to 146 conditions per place. [2024-11-27 23:23:32,024 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-11-27 23:23:32,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 163 flow [2024-11-27 23:23:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:23:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:23:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-27 23:23:32,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-27 23:23:32,054 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 5 states and 80 transitions. [2024-11-27 23:23:32,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 163 flow [2024-11-27 23:23:32,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 149 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:23:32,067 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 80 flow [2024-11-27 23:23:32,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2024-11-27 23:23:32,076 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-11-27 23:23:32,077 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 80 flow [2024-11-27 23:23:32,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-27 23:23:32,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:32,077 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:32,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:23:32,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:32,280 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)] === [2024-11-27 23:23:32,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash 496470357, now seen corresponding path program 1 times [2024-11-27 23:23:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:32,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621643712] [2024-11-27 23:23:32,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:32,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:32,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:32,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:32,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:23:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:32,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:23:32,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:32,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:32,472 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:32,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621643712] [2024-11-27 23:23:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621643712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:32,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:32,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:23:32,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886031308] [2024-11-27 23:23:32,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:32,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:23:32,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:32,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:23:32,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:23:32,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-27 23:23:32,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-27 23:23:32,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:32,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-27 23:23:32,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:32,733 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2024-11-27 23:23:32,734 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-27 23:23:32,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 247 events. 111/247 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 944 event pairs, 30 based on Foata normal form. 13/245 useless extension candidates. Maximal degree in co-relation 260. Up to 97 conditions per place. [2024-11-27 23:23:32,743 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2024-11-27 23:23:32,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 216 flow [2024-11-27 23:23:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:23:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:23:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-11-27 23:23:32,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-11-27 23:23:32,745 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 80 flow. Second operand 5 states and 73 transitions. [2024-11-27 23:23:32,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 216 flow [2024-11-27 23:23:32,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:23:32,772 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 111 flow [2024-11-27 23:23:32,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2024-11-27 23:23:32,774 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-11-27 23:23:32,774 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 111 flow [2024-11-27 23:23:32,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-27 23:23:32,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:32,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:32,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:23:32,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:32,981 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)] === [2024-11-27 23:23:32,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 747208226, now seen corresponding path program 1 times [2024-11-27 23:23:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011887505] [2024-11-27 23:23:32,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:32,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:32,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:32,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:32,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:23:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:33,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:23:33,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:33,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:33,661 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011887505] [2024-11-27 23:23:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011887505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:33,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:23:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-27 23:23:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903778339] [2024-11-27 23:23:33,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:33,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:23:33,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:33,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:23:33,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:23:33,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-27 23:23:33,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 111 flow. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 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) [2024-11-27 23:23:33,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:33,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-27 23:23:33,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:35,952 INFO L124 PetriNetUnfolderBase]: 257/543 cut-off events. [2024-11-27 23:23:35,952 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-11-27 23:23:35,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 543 events. 257/543 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2504 event pairs, 15 based on Foata normal form. 10/516 useless extension candidates. Maximal degree in co-relation 664. Up to 94 conditions per place. [2024-11-27 23:23:35,959 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 82 selfloop transitions, 35 changer transitions 0/121 dead transitions. [2024-11-27 23:23:35,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 121 transitions, 621 flow [2024-11-27 23:23:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:23:35,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-27 23:23:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 243 transitions. [2024-11-27 23:23:35,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39901477832512317 [2024-11-27 23:23:35,965 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 111 flow. Second operand 21 states and 243 transitions. [2024-11-27 23:23:35,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 121 transitions, 621 flow [2024-11-27 23:23:35,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 121 transitions, 618 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:23:35,974 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 320 flow [2024-11-27 23:23:35,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=320, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-27 23:23:35,976 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-11-27 23:23:35,976 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 320 flow [2024-11-27 23:23:35,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 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) [2024-11-27 23:23:35,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:35,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:35,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:23:36,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:36,178 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)] === [2024-11-27 23:23:36,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash -917445054, now seen corresponding path program 1 times [2024-11-27 23:23:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:36,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10003226] [2024-11-27 23:23:36,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:36,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:36,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:36,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:36,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:23:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:36,269 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:23:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:36,311 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-27 23:23:36,311 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:23:36,312 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2024-11-27 23:23:36,314 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-27 23:23:36,314 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-27 23:23:36,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-27 23:23:36,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-27 23:23:36,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:23:36,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:36,516 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-27 23:23:36,556 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 23:23:36,556 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:23:36,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:23:36 BasicIcfg [2024-11-27 23:23:36,566 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:23:36,567 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:23:36,567 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:23:36,567 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:23:36,568 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:30" (3/4) ... [2024-11-27 23:23:36,570 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 23:23:36,571 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:23:36,572 INFO L158 Benchmark]: Toolchain (without parser) took 7506.62ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 59.5MB in the beginning and 41.9MB in the end (delta: 17.7MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2024-11-27 23:23:36,573 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:36,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.89ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 38.8MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 23:23:36,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.72ms. Allocated memory is still 83.9MB. Free memory was 38.8MB in the beginning and 37.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:36,574 INFO L158 Benchmark]: Boogie Preprocessor took 85.88ms. Allocated memory is still 83.9MB. Free memory was 37.3MB in the beginning and 35.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:36,574 INFO L158 Benchmark]: RCFGBuilder took 846.79ms. Allocated memory is still 83.9MB. Free memory was 35.4MB in the beginning and 49.6MB in the end (delta: -14.2MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2024-11-27 23:23:36,575 INFO L158 Benchmark]: TraceAbstraction took 5796.19ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 49.1MB in the beginning and 42.5MB in the end (delta: 6.6MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2024-11-27 23:23:36,575 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 100.7MB. Free memory was 42.5MB in the beginning and 41.9MB in the end (delta: 613.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:23:36,578 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 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.89ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 38.8MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.72ms. Allocated memory is still 83.9MB. Free memory was 38.8MB in the beginning and 37.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 85.88ms. Allocated memory is still 83.9MB. Free memory was 37.3MB in the beginning and 35.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 846.79ms. Allocated memory is still 83.9MB. Free memory was 35.4MB in the beginning and 49.6MB in the end (delta: -14.2MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5796.19ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 49.1MB in the beginning and 42.5MB in the end (delta: 6.6MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 100.7MB. Free memory was 42.5MB in the beginning and 41.9MB in the end (delta: 613.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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] [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=0, t1=-1, t2=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] [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. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 207 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 527 IncrementalHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 2 mSDtfsCounter, 527 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred in iteration=3, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 9 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 23:23:36,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0e489b-7463-4840-bf12-6692619f7712/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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