./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-theta/unwind2-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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:29:39,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:29:39,089 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:29:39,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:29:39,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:29:39,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:29:39,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:29:39,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:29:39,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:29:39,149 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:29:39,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:29:39,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:29:39,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:29:39,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:29:39,150 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:29:39,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:29:39,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:29:39,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:29:39,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:29:39,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:29:39,152 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:29:39,153 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:29:39,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:29:39,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:29:39,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:29:39,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:29:39,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:29:39,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:29:39,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:29:39,155 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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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 -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-28 03:29:39,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:29:39,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:29:39,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:29:39,498 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:29:39,499 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:29:39,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-28 03:29:42,685 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/823bc01e3/674ceb83ab20403280e8a3c0d6142c9c/FLAGb53f27e92 [2024-11-28 03:29:43,157 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:29:43,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-28 03:29:43,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/823bc01e3/674ceb83ab20403280e8a3c0d6142c9c/FLAGb53f27e92 [2024-11-28 03:29:43,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/823bc01e3/674ceb83ab20403280e8a3c0d6142c9c [2024-11-28 03:29:43,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:29:43,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:29:43,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:29:43,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:29:43,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:29:43,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d571d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43, skipping insertion in model container [2024-11-28 03:29:43,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:29:43,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:29:43,646 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:29:43,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:29:43,741 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:29:43,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43 WrapperNode [2024-11-28 03:29:43,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:29:43,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:29:43,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:29:43,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:29:43,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,790 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-28 03:29:43,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:29:43,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:29:43,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:29:43,792 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:29:43,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,816 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]. [2024-11-28 03:29:43,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,822 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:29:43,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:29:43,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:29:43,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:29:43,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (1/1) ... [2024-11-28 03:29:43,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:29:43,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:43,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:29:43,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:29:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:29:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-28 03:29:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-28 03:29:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-28 03:29:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-28 03:29:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:29:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:29:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:29:43,907 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:29:44,041 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:29:44,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:29:44,212 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:29:44,212 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:29:44,372 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:29:44,372 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:29:44,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:29:44 BoogieIcfgContainer [2024-11-28 03:29:44,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:29:44,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:29:44,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:29:44,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:29:44,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:29:43" (1/3) ... [2024-11-28 03:29:44,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60200e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:29:44, skipping insertion in model container [2024-11-28 03:29:44,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:43" (2/3) ... [2024-11-28 03:29:44,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60200e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:29:44, skipping insertion in model container [2024-11-28 03:29:44,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:29:44" (3/3) ... [2024-11-28 03:29:44,387 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-28 03:29:44,404 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:29:44,406 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-28 03:29:44,406 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:29:44,480 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:29:44,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-28 03:29:44,560 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-28 03:29:44,563 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:29:44,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-28 03:29:44,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-28 03:29:44,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-28 03:29:44,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:29:44,607 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;@68e16106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:29:44,607 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 03:29:44,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:29:44,618 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-28 03:29:44,618 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:29:44,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:29:44,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:44,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:29:44,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1967392351, now seen corresponding path program 1 times [2024-11-28 03:29:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:44,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469225906] [2024-11-28 03:29:44,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:45,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469225906] [2024-11-28 03:29:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469225906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:45,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:45,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:29:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700947100] [2024-11-28 03:29:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:45,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:29:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:45,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:29:45,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:29:45,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-28 03:29:45,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2024-11-28 03:29:45,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:29:45,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-28 03:29:45,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:29:46,076 INFO L124 PetriNetUnfolderBase]: 451/881 cut-off events. [2024-11-28 03:29:46,076 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-28 03:29:46,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 881 events. 451/881 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4723 event pairs, 42 based on Foata normal form. 148/903 useless extension candidates. Maximal degree in co-relation 1558. Up to 215 conditions per place. [2024-11-28 03:29:46,087 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 92 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-11-28 03:29:46,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 117 transitions, 499 flow [2024-11-28 03:29:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:29:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:29:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-11-28 03:29:46,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5574162679425837 [2024-11-28 03:29:46,107 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 11 states and 233 transitions. [2024-11-28 03:29:46,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 117 transitions, 499 flow [2024-11-28 03:29:46,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 117 transitions, 469 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:29:46,120 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 177 flow [2024-11-28 03:29:46,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=177, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-11-28 03:29:46,128 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-28 03:29:46,128 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 177 flow [2024-11-28 03:29:46,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2024-11-28 03:29:46,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:29:46,129 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:46,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:29:46,129 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:29:46,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash 858634952, now seen corresponding path program 1 times [2024-11-28 03:29:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977632752] [2024-11-28 03:29:46,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:46,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:46,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:46,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977632752] [2024-11-28 03:29:46,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977632752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:46,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196079767] [2024-11-28 03:29:46,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:46,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:46,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:46,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:46,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:29:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:46,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:29:46,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:46,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:29:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196079767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:46,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:29:46,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:29:46,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026361345] [2024-11-28 03:29:46,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:46,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:46,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:46,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:46,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:29:46,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-28 03:29:46,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-28 03:29:46,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:29:46,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-28 03:29:46,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:29:47,004 INFO L124 PetriNetUnfolderBase]: 411/852 cut-off events. [2024-11-28 03:29:47,004 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2024-11-28 03:29:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 852 events. 411/852 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4718 event pairs, 86 based on Foata normal form. 26/793 useless extension candidates. Maximal degree in co-relation 1929. Up to 203 conditions per place. [2024-11-28 03:29:47,015 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 89 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2024-11-28 03:29:47,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 113 transitions, 560 flow [2024-11-28 03:29:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:29:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:29:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-11-28 03:29:47,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-11-28 03:29:47,020 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 177 flow. Second operand 9 states and 192 transitions. [2024-11-28 03:29:47,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 113 transitions, 560 flow [2024-11-28 03:29:47,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 113 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:29:47,036 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 249 flow [2024-11-28 03:29:47,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=249, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-11-28 03:29:47,037 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2024-11-28 03:29:47,037 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 249 flow [2024-11-28 03:29:47,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-28 03:29:47,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:29:47,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:47,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:29:47,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:47,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:29:47,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1412439246, now seen corresponding path program 1 times [2024-11-28 03:29:47,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:47,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335630289] [2024-11-28 03:29:47,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:47,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:47,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:47,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335630289] [2024-11-28 03:29:47,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335630289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:47,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:29:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446437470] [2024-11-28 03:29:47,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:47,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:47,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:47,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:47,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-28 03:29:47,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-28 03:29:47,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:29:47,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-28 03:29:47,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:29:47,830 INFO L124 PetriNetUnfolderBase]: 477/1003 cut-off events. [2024-11-28 03:29:47,830 INFO L125 PetriNetUnfolderBase]: For 1169/1171 co-relation queries the response was YES. [2024-11-28 03:29:47,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 1003 events. 477/1003 cut-off events. For 1169/1171 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5772 event pairs, 107 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 2395. Up to 385 conditions per place. [2024-11-28 03:29:47,841 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 71 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-11-28 03:29:47,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 677 flow [2024-11-28 03:29:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:29:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:29:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-28 03:29:47,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-11-28 03:29:47,843 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 249 flow. Second operand 7 states and 132 transitions. [2024-11-28 03:29:47,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 677 flow [2024-11-28 03:29:47,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:29:47,856 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 324 flow [2024-11-28 03:29:47,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-28 03:29:47,857 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-28 03:29:47,857 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 324 flow [2024-11-28 03:29:47,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-28 03:29:47,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:29:47,858 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:47,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:29:47,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:29:47,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash 834957894, now seen corresponding path program 1 times [2024-11-28 03:29:47,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:47,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999094303] [2024-11-28 03:29:47,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:48,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:48,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999094303] [2024-11-28 03:29:48,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999094303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:48,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086155748] [2024-11-28 03:29:48,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:48,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:48,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:48,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:48,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:29:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:48,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:29:48,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:48,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:29:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086155748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:29:48,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:29:48,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-28 03:29:48,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291909973] [2024-11-28 03:29:48,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:29:48,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:29:48,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:48,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:29:48,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:29:48,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-28 03:29:48,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 324 flow. Second operand has 15 states, 15 states have (on average 10.533333333333333) internal successors, (158), 15 states have internal predecessors, (158), 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) [2024-11-28 03:29:48,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:29:48,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-28 03:29:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:29:49,826 INFO L124 PetriNetUnfolderBase]: 807/1551 cut-off events. [2024-11-28 03:29:49,827 INFO L125 PetriNetUnfolderBase]: For 2256/2258 co-relation queries the response was YES. [2024-11-28 03:29:49,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 1551 events. 807/1551 cut-off events. For 2256/2258 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9075 event pairs, 107 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 4397. Up to 385 conditions per place. [2024-11-28 03:29:49,851 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 139 selfloop transitions, 28 changer transitions 0/176 dead transitions. [2024-11-28 03:29:49,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 176 transitions, 1377 flow [2024-11-28 03:29:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:29:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:29:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 236 transitions. [2024-11-28 03:29:49,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4777327935222672 [2024-11-28 03:29:49,856 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 324 flow. Second operand 13 states and 236 transitions. [2024-11-28 03:29:49,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 176 transitions, 1377 flow [2024-11-28 03:29:49,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 176 transitions, 1356 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 03:29:49,884 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 484 flow [2024-11-28 03:29:49,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=484, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-28 03:29:49,888 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-11-28 03:29:49,889 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 484 flow [2024-11-28 03:29:49,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.533333333333333) internal successors, (158), 15 states have internal predecessors, (158), 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) [2024-11-28 03:29:49,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:29:49,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:49,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:29:50,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:50,091 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:29:50,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash -364963846, now seen corresponding path program 1 times [2024-11-28 03:29:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:50,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181569875] [2024-11-28 03:29:50,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:50,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:50,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181569875] [2024-11-28 03:29:50,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181569875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:50,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:50,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:29:50,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463160534] [2024-11-28 03:29:50,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:50,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:50,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:50,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:50,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-28 03:29:50,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-28 03:29:50,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:29:50,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-28 03:29:50,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:29:50,628 INFO L124 PetriNetUnfolderBase]: 704/1462 cut-off events. [2024-11-28 03:29:50,629 INFO L125 PetriNetUnfolderBase]: For 3227/3229 co-relation queries the response was YES. [2024-11-28 03:29:50,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 1462 events. 704/1462 cut-off events. For 3227/3229 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9111 event pairs, 152 based on Foata normal form. 20/1429 useless extension candidates. Maximal degree in co-relation 4872. Up to 676 conditions per place. [2024-11-28 03:29:50,641 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 67 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-11-28 03:29:50,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 849 flow [2024-11-28 03:29:50,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:29:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:29:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-28 03:29:50,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-28 03:29:50,643 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 484 flow. Second operand 6 states and 111 transitions. [2024-11-28 03:29:50,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 849 flow [2024-11-28 03:29:50,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 96 transitions, 799 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-28 03:29:50,673 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 492 flow [2024-11-28 03:29:50,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-28 03:29:50,675 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2024-11-28 03:29:50,675 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 492 flow [2024-11-28 03:29:50,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-28 03:29:50,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:29:50,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:50,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:29:50,676 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:29:50,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash -398345623, now seen corresponding path program 1 times [2024-11-28 03:29:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41771396] [2024-11-28 03:29:50,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:50,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:29:50,689 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:29:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:29:50,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:29:50,716 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:29:50,717 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-28 03:29:50,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-28 03:29:50,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-28 03:29:50,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-28 03:29:50,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-28 03:29:50,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-28 03:29:50,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 03:29:50,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:29:50,721 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-28 03:29:50,754 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 03:29:50,754 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:29:50,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:29:50 BasicIcfg [2024-11-28 03:29:50,761 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:29:50,762 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:29:50,762 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:29:50,762 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:29:50,763 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:29:44" (3/4) ... [2024-11-28 03:29:50,765 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 03:29:50,766 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:29:50,768 INFO L158 Benchmark]: Toolchain (without parser) took 7558.90ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 105.5MB in the beginning and 272.6MB in the end (delta: -167.1MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2024-11-28 03:29:50,768 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:29:50,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.57ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 85.3MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:29:50,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.39ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.4MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:29:50,769 INFO L158 Benchmark]: Boogie Preprocessor took 39.55ms. Allocated memory is still 142.6MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:29:50,770 INFO L158 Benchmark]: RCFGBuilder took 540.79ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 61.0MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:29:50,770 INFO L158 Benchmark]: TraceAbstraction took 6383.00ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 60.3MB in the beginning and 272.7MB in the end (delta: -212.4MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-11-28 03:29:50,771 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 360.7MB. Free memory was 272.7MB in the beginning and 272.6MB in the end (delta: 106.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:29:50,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.57ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 85.3MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.39ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 83.4MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.55ms. Allocated memory is still 142.6MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 540.79ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 61.0MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6383.00ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 60.3MB in the beginning and 272.7MB in the end (delta: -212.4MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 360.7MB. Free memory was 272.7MB in the beginning and 272.6MB in the end (delta: 106.0kB). 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; [L775] 0 _N = __VERIFIER_nondet_int() [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=0, limit=0, t1=-2] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=0, limit=0, t1=-2, t2=-1] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=1] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=0, limit=0] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 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: 6.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 587 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 574 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1091 IncrementalHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 27 mSDtfsCounter, 1091 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=492occurred in iteration=5, InterpolantAutomatonStates: 46, 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, 1.8s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 11 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 1/5 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 [2024-11-28 03:29:50,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:29:53,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:29:53,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 03:29:53,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:29:53,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:29:53,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:29:53,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:29:53,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:29:53,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:29:53,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:29:53,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:29:53,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:29:53,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:29:53,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:29:53,846 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:29:53,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:29:53,848 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:29:53,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:29:53,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:29:53,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:29:53,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:29:53,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:29:53,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:29:53,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:29:53,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:29:53,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:29:53,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:29:53,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:29:53,852 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:29:53,853 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:29:53,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:29:53,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:29:53,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:29:53,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:29:53,854 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_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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 -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-28 03:29:54,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:29:54,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:29:54,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:29:54,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:29:54,299 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:29:54,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-28 03:29:57,845 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/0d5ef6316/21576a75574244d38230494e86e86584/FLAG9cab50dd2 [2024-11-28 03:29:58,213 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:29:58,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-28 03:29:58,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/0d5ef6316/21576a75574244d38230494e86e86584/FLAG9cab50dd2 [2024-11-28 03:29:58,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/data/0d5ef6316/21576a75574244d38230494e86e86584 [2024-11-28 03:29:58,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:29:58,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:29:58,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:29:58,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:29:58,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:29:58,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:29:58" (1/1) ... [2024-11-28 03:29:58,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fbf343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:58, skipping insertion in model container [2024-11-28 03:29:58,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:29:58" (1/1) ... [2024-11-28 03:29:58,313 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:29:58,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:29:58,957 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:29:59,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:29:59,088 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:29:59,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59 WrapperNode [2024-11-28 03:29:59,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:29:59,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:29:59,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:29:59,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:29:59,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,167 INFO L138 Inliner]: procedures = 170, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-28 03:29:59,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:29:59,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:29:59,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:29:59,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:29:59,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,205 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]. [2024-11-28 03:29:59,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,217 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:29:59,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:29:59,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:29:59,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:29:59,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (1/1) ... [2024-11-28 03:29:59,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:29:59,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:59,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:29:59,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:29:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:29:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-28 03:29:59,319 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-28 03:29:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-28 03:29:59,319 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-28 03:29:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:29:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:29:59,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:29:59,322 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:29:59,559 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:29:59,561 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:29:59,891 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:29:59,892 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:30:00,148 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:30:00,149 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:30:00,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:30:00 BoogieIcfgContainer [2024-11-28 03:30:00,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:30:00,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:30:00,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:30:00,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:30:00,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:29:58" (1/3) ... [2024-11-28 03:30:00,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac3b5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:30:00, skipping insertion in model container [2024-11-28 03:30:00,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:29:59" (2/3) ... [2024-11-28 03:30:00,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac3b5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:30:00, skipping insertion in model container [2024-11-28 03:30:00,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:30:00" (3/3) ... [2024-11-28 03:30:00,163 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-28 03:30:00,185 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:30:00,188 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-28 03:30:00,188 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:30:00,299 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:30:00,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-28 03:30:00,380 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-28 03:30:00,383 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:30:00,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-28 03:30:00,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-28 03:30:00,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-28 03:30:00,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:30:00,422 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@652cca50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:30:00,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 03:30:00,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:30:00,434 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-28 03:30:00,434 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:30:00,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:30:00,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:00,436 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:30:00,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1967392351, now seen corresponding path program 1 times [2024-11-28 03:30:00,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:30:00,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93326752] [2024-11-28 03:30:00,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:00,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:00,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:00,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:30:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:00,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:30:00,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:00,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:30:00,965 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:30:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93326752] [2024-11-28 03:30:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93326752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:00,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:00,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:30:00,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81793447] [2024-11-28 03:30:00,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:00,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:30:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:30:01,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:30:01,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:30:01,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-28 03:30:01,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-28 03:30:01,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:30:01,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-28 03:30:01,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:30:01,959 INFO L124 PetriNetUnfolderBase]: 375/791 cut-off events. [2024-11-28 03:30:01,959 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-28 03:30:01,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 791 events. 375/791 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4445 event pairs, 42 based on Foata normal form. 158/857 useless extension candidates. Maximal degree in co-relation 1351. Up to 215 conditions per place. [2024-11-28 03:30:01,970 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 77 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-11-28 03:30:01,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 98 transitions, 418 flow [2024-11-28 03:30:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:30:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:30:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-11-28 03:30:01,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5847953216374269 [2024-11-28 03:30:01,988 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 9 states and 200 transitions. [2024-11-28 03:30:01,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 98 transitions, 418 flow [2024-11-28 03:30:01,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 98 transitions, 390 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:30:02,000 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 151 flow [2024-11-28 03:30:02,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=151, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-11-28 03:30:02,007 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-11-28 03:30:02,007 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 151 flow [2024-11-28 03:30:02,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-28 03:30:02,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:30:02,008 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:02,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:30:02,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:02,212 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:30:02,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash 858634952, now seen corresponding path program 1 times [2024-11-28 03:30:02,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:30:02,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354252036] [2024-11-28 03:30:02,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:02,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:02,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:02,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:02,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:30:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:02,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:30:02,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:02,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:02,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:30:02,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354252036] [2024-11-28 03:30:02,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354252036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:02,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:30:02,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2024-11-28 03:30:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188686783] [2024-11-28 03:30:02,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:02,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:30:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:30:02,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:30:02,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:30:02,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-28 03:30:02,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 151 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 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) [2024-11-28 03:30:02,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:30:02,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-28 03:30:02,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:30:05,699 INFO L124 PetriNetUnfolderBase]: 883/1677 cut-off events. [2024-11-28 03:30:05,699 INFO L125 PetriNetUnfolderBase]: For 531/531 co-relation queries the response was YES. [2024-11-28 03:30:05,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 1677 events. 883/1677 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9979 event pairs, 14 based on Foata normal form. 62/1540 useless extension candidates. Maximal degree in co-relation 2898. Up to 257 conditions per place. [2024-11-28 03:30:05,722 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 206 selfloop transitions, 44 changer transitions 0/257 dead transitions. [2024-11-28 03:30:05,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 257 transitions, 1217 flow [2024-11-28 03:30:05,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:30:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 03:30:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 489 transitions. [2024-11-28 03:30:05,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4949392712550607 [2024-11-28 03:30:05,733 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 151 flow. Second operand 26 states and 489 transitions. [2024-11-28 03:30:05,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 257 transitions, 1217 flow [2024-11-28 03:30:05,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 257 transitions, 1216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:30:05,778 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 438 flow [2024-11-28 03:30:05,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=438, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-11-28 03:30:05,784 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2024-11-28 03:30:05,784 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 438 flow [2024-11-28 03:30:05,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 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) [2024-11-28 03:30:05,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:30:05,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:05,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:30:05,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:05,988 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:30:05,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1412439246, now seen corresponding path program 1 times [2024-11-28 03:30:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:30:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694944672] [2024-11-28 03:30:05,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:05,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:05,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:05,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:06,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:30:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:06,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:30:06,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:06,277 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:30:06,277 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:30:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694944672] [2024-11-28 03:30:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694944672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:06,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481619722] [2024-11-28 03:30:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:06,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:30:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:30:06,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:30:06,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:30:06,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-28 03:30:06,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-28 03:30:06,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:30:06,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-28 03:30:06,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:30:07,114 INFO L124 PetriNetUnfolderBase]: 831/1712 cut-off events. [2024-11-28 03:30:07,115 INFO L125 PetriNetUnfolderBase]: For 3046/3048 co-relation queries the response was YES. [2024-11-28 03:30:07,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 1712 events. 831/1712 cut-off events. For 3046/3048 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11028 event pairs, 223 based on Foata normal form. 2/1633 useless extension candidates. Maximal degree in co-relation 4572. Up to 568 conditions per place. [2024-11-28 03:30:07,129 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 112 selfloop transitions, 19 changer transitions 0/141 dead transitions. [2024-11-28 03:30:07,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 141 transitions, 1225 flow [2024-11-28 03:30:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:30:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:30:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-11-28 03:30:07,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075187969924813 [2024-11-28 03:30:07,131 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 438 flow. Second operand 7 states and 135 transitions. [2024-11-28 03:30:07,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 141 transitions, 1225 flow [2024-11-28 03:30:07,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 141 transitions, 909 flow, removed 119 selfloop flow, removed 10 redundant places. [2024-11-28 03:30:07,165 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 392 flow [2024-11-28 03:30:07,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=392, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-11-28 03:30:07,166 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2024-11-28 03:30:07,166 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 392 flow [2024-11-28 03:30:07,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-28 03:30:07,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:30:07,167 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:07,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:07,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:07,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:30:07,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash 834957894, now seen corresponding path program 1 times [2024-11-28 03:30:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:30:07,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043751627] [2024-11-28 03:30:07,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:07,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:07,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:07,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:30:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:07,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:30:07,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:07,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:07,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:30:07,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043751627] [2024-11-28 03:30:07,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043751627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:07,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:30:07,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-28 03:30:07,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433706851] [2024-11-28 03:30:07,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:07,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:30:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:30:07,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:30:07,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:30:07,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-28 03:30:07,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 392 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2024-11-28 03:30:07,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:30:07,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-28 03:30:07,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:30:09,768 INFO L124 PetriNetUnfolderBase]: 2157/4039 cut-off events. [2024-11-28 03:30:09,768 INFO L125 PetriNetUnfolderBase]: For 4598/4598 co-relation queries the response was YES. [2024-11-28 03:30:09,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11801 conditions, 4039 events. 2157/4039 cut-off events. For 4598/4598 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27836 event pairs, 156 based on Foata normal form. 0/3654 useless extension candidates. Maximal degree in co-relation 10418. Up to 668 conditions per place. [2024-11-28 03:30:09,810 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 403 selfloop transitions, 50 changer transitions 0/462 dead transitions. [2024-11-28 03:30:09,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 462 transitions, 3227 flow [2024-11-28 03:30:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:30:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:30:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 416 transitions. [2024-11-28 03:30:09,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-11-28 03:30:09,814 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 392 flow. Second operand 22 states and 416 transitions. [2024-11-28 03:30:09,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 462 transitions, 3227 flow [2024-11-28 03:30:09,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 462 transitions, 3198 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 03:30:09,908 INFO L231 Difference]: Finished difference. Result has 99 places, 105 transitions, 687 flow [2024-11-28 03:30:09,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=687, PETRI_PLACES=99, PETRI_TRANSITIONS=105} [2024-11-28 03:30:09,910 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2024-11-28 03:30:09,910 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 105 transitions, 687 flow [2024-11-28 03:30:09,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2024-11-28 03:30:09,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:30:09,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:09,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:10,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:10,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:30:10,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:10,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1342235164, now seen corresponding path program 1 times [2024-11-28 03:30:10,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:30:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718825308] [2024-11-28 03:30:10,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:10,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:10,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:10,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:10,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:30:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:10,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:30:10,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:10,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:30:10,361 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:30:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718825308] [2024-11-28 03:30:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718825308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:10,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472030431] [2024-11-28 03:30:10,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:10,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:30:10,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:30:10,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:30:10,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:30:10,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-28 03:30:10,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 105 transitions, 687 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-28 03:30:10,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:30:10,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-28 03:30:10,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:30:11,362 INFO L124 PetriNetUnfolderBase]: 1810/3628 cut-off events. [2024-11-28 03:30:11,362 INFO L125 PetriNetUnfolderBase]: For 7586/7588 co-relation queries the response was YES. [2024-11-28 03:30:11,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12360 conditions, 3628 events. 1810/3628 cut-off events. For 7586/7588 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26555 event pairs, 406 based on Foata normal form. 28/3650 useless extension candidates. Maximal degree in co-relation 11002. Up to 1437 conditions per place. [2024-11-28 03:30:11,406 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 110 selfloop transitions, 25 changer transitions 0/147 dead transitions. [2024-11-28 03:30:11,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 147 transitions, 1220 flow [2024-11-28 03:30:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:30:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:30:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-11-28 03:30:11,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-11-28 03:30:11,408 INFO L175 Difference]: Start difference. First operand has 99 places, 105 transitions, 687 flow. Second operand 6 states and 113 transitions. [2024-11-28 03:30:11,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 147 transitions, 1220 flow [2024-11-28 03:30:11,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1085 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-11-28 03:30:11,515 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 650 flow [2024-11-28 03:30:11,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-11-28 03:30:11,519 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2024-11-28 03:30:11,520 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 650 flow [2024-11-28 03:30:11,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-28 03:30:11,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:30:11,520 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:30:11,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:30:11,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:11,726 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:30:11,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1998783477, now seen corresponding path program 1 times [2024-11-28 03:30:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:30:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407824529] [2024-11-28 03:30:11,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:11,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:11,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:11,730 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:11,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:30:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:30:11,815 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:30:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:30:11,866 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 03:30:11,866 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:30:11,867 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-28 03:30:11,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-28 03:30:11,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-28 03:30:11,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-28 03:30:11,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-28 03:30:11,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-28 03:30:11,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 03:30:11,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:12,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:12,071 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-28 03:30:12,106 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 03:30:12,106 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:30:12,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:30:12 BasicIcfg [2024-11-28 03:30:12,113 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:30:12,114 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:30:12,114 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:30:12,114 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:30:12,115 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:30:00" (3/4) ... [2024-11-28 03:30:12,117 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 03:30:12,118 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:30:12,119 INFO L158 Benchmark]: Toolchain (without parser) took 13856.10ms. Allocated memory was 83.9MB in the beginning and 167.8MB in the end (delta: 83.9MB). Free memory was 58.8MB in the beginning and 43.7MB in the end (delta: 15.1MB). Peak memory consumption was 98.2MB. Max. memory is 16.1GB. [2024-11-28 03:30:12,119 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 83.9MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:30:12,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 825.91ms. Allocated memory is still 83.9MB. Free memory was 58.8MB in the beginning and 37.9MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:30:12,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.52ms. Allocated memory is still 83.9MB. Free memory was 37.9MB in the beginning and 36.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:30:12,121 INFO L158 Benchmark]: Boogie Preprocessor took 70.20ms. Allocated memory is still 83.9MB. Free memory was 36.0MB in the beginning and 34.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:30:12,121 INFO L158 Benchmark]: RCFGBuilder took 910.85ms. Allocated memory is still 83.9MB. Free memory was 34.1MB in the beginning and 45.4MB in the end (delta: -11.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2024-11-28 03:30:12,122 INFO L158 Benchmark]: TraceAbstraction took 11960.81ms. Allocated memory was 83.9MB in the beginning and 167.8MB in the end (delta: 83.9MB). Free memory was 44.9MB in the beginning and 43.7MB in the end (delta: 1.2MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. [2024-11-28 03:30:12,122 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory was 43.7MB in the beginning and 43.7MB in the end (delta: 15.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:30:12,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 83.9MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 825.91ms. Allocated memory is still 83.9MB. Free memory was 58.8MB in the beginning and 37.9MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.52ms. Allocated memory is still 83.9MB. Free memory was 37.9MB in the beginning and 36.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 70.20ms. Allocated memory is still 83.9MB. Free memory was 36.0MB in the beginning and 34.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 910.85ms. Allocated memory is still 83.9MB. Free memory was 34.1MB in the beginning and 45.4MB in the end (delta: -11.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11960.81ms. Allocated memory was 83.9MB in the beginning and 167.8MB in the end (delta: 83.9MB). Free memory was 44.9MB in the beginning and 43.7MB in the end (delta: 1.2MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory was 43.7MB in the beginning and 43.7MB in the end (delta: 15.8kB). 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; [L775] 0 _N = __VERIFIER_nondet_int() [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=0, limit=0, t1=-1] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=0, limit=0, t1=-1, t2=0] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=1] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=0, limit=0] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 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: 11.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 881 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 871 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1405 IncrementalHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 26 mSDtfsCounter, 1405 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=687occurred in iteration=4, InterpolantAutomatonStates: 70, 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, 1.5s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 28 NumberOfNonLiveVariables, 197 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 0/4 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 [2024-11-28 03:30:12,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_665dc54d-7c06-4a9a-b4e5-a1c574d362ea/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