./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:58:40,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:58:40,598 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:58:40,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:58:40,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:58:40,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:58:40,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:58:40,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:58:40,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:58:40,628 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:58:40,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:58:40,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:58:40,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:58:40,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:58:40,629 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:58:40,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:58:40,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:58:40,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:58:40,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:58:40,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:58:40,630 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:58:40,630 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:58:40,630 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:58:40,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:58:40,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:58:40,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:58:40,631 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:58:40,631 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:58:40,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:58:40,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:58:40,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:58:40,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:58:40,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:58:40,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:58:40,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:58:40,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:58:40,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:58:40,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:58:40,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:58:40,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:58:40,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:58:40,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:58:40,633 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_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd 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 -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-11-13 15:58:40,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:58:40,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:58:40,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:58:40,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:58:40,994 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:58:40,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i Unable to find full path for "g++" [2024-11-13 15:58:42,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:58:43,319 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:58:43,320 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-11-13 15:58:43,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/data/c6230e5ca/90fc4326105a4d15bf28575d7464b14e/FLAG9b2853948 [2024-11-13 15:58:43,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/data/c6230e5ca/90fc4326105a4d15bf28575d7464b14e [2024-11-13 15:58:43,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:58:43,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:58:43,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:58:43,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:58:43,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:58:43,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:58:43" (1/1) ... [2024-11-13 15:58:43,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bde077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:43, skipping insertion in model container [2024-11-13 15:58:43,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:58:43" (1/1) ... [2024-11-13 15:58:43,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:58:43,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:58:43,900 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:58:43,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:58:44,009 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:58:44,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44 WrapperNode [2024-11-13 15:58:44,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:58:44,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:58:44,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:58:44,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:58:44,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,069 INFO L138 Inliner]: procedures = 274, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 150 [2024-11-13 15:58:44,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:58:44,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:58:44,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:58:44,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:58:44,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,124 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 2, 8, 8]. 40 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 0, 8, 8]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-13 15:58:44,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:58:44,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:58:44,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:58:44,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:58:44,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (1/1) ... [2024-11-13 15:58:44,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:58:44,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:44,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:58:44,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:58:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:58:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:58:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:58:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:58:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 15:58:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:58:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:58:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:58:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:58:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:58:44,213 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:58:44,401 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:58:44,402 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:58:44,751 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:58:44,751 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:58:45,490 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:58:45,491 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-13 15:58:45,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:58:45 BoogieIcfgContainer [2024-11-13 15:58:45,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:58:45,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:58:45,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:58:45,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:58:45,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:58:43" (1/3) ... [2024-11-13 15:58:45,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793bf692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:58:45, skipping insertion in model container [2024-11-13 15:58:45,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:44" (2/3) ... [2024-11-13 15:58:45,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793bf692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:58:45, skipping insertion in model container [2024-11-13 15:58:45,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:58:45" (3/3) ... [2024-11-13 15:58:45,502 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-11-13 15:58:45,519 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:58:45,521 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_08-cond_racefree.i that has 2 procedures, 53 locations, 1 initial locations, 6 loop locations, and 6 error locations. [2024-11-13 15:58:45,521 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:58:45,587 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 15:58:45,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 67 transitions, 141 flow [2024-11-13 15:58:45,700 INFO L124 PetriNetUnfolderBase]: 21/105 cut-off events. [2024-11-13 15:58:45,703 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:58:45,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 21/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 379 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2024-11-13 15:58:45,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 67 transitions, 141 flow [2024-11-13 15:58:45,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 67 transitions, 141 flow [2024-11-13 15:58:45,726 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:58:45,748 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;@6608ce30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:58:45,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 15:58:45,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:58:45,759 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 15:58:45,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:58:45,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:45,761 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:58:45,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:45,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:45,766 INFO L85 PathProgramCache]: Analyzing trace with hash 482095, now seen corresponding path program 1 times [2024-11-13 15:58:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:45,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877123708] [2024-11-13 15:58:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:46,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:46,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877123708] [2024-11-13 15:58:46,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877123708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:46,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:46,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:58:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943869327] [2024-11-13 15:58:46,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:46,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:46,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:46,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-11-13 15:58:46,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-13 15:58:46,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:46,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-11-13 15:58:46,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:46,549 INFO L124 PetriNetUnfolderBase]: 179/511 cut-off events. [2024-11-13 15:58:46,549 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:58:46,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 511 events. 179/511 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2727 event pairs, 120 based on Foata normal form. 97/577 useless extension candidates. Maximal degree in co-relation 808. Up to 307 conditions per place. [2024-11-13 15:58:46,558 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 35 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2024-11-13 15:58:46,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 209 flow [2024-11-13 15:58:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:58:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:58:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-13 15:58:46,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2024-11-13 15:58:46,579 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 141 flow. Second operand 3 states and 131 transitions. [2024-11-13 15:58:46,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 209 flow [2024-11-13 15:58:46,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:58:46,592 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 117 flow [2024-11-13 15:58:46,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-13 15:58:46,602 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-13 15:58:46,602 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 117 flow [2024-11-13 15:58:46,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-13 15:58:46,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:46,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:58:46,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:58:46,603 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:46,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash 482096, now seen corresponding path program 1 times [2024-11-13 15:58:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498908146] [2024-11-13 15:58:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:46,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498908146] [2024-11-13 15:58:46,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498908146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:46,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:46,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:58:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492181070] [2024-11-13 15:58:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:46,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:46,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:47,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-11-13 15:58:47,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-13 15:58:47,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:47,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-11-13 15:58:47,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:47,224 INFO L124 PetriNetUnfolderBase]: 141/445 cut-off events. [2024-11-13 15:58:47,224 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-13 15:58:47,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 445 events. 141/445 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2417 event pairs, 61 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 712. Up to 267 conditions per place. [2024-11-13 15:58:47,231 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-13 15:58:47,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 211 flow [2024-11-13 15:58:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:58:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:58:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-13 15:58:47,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-11-13 15:58:47,235 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 117 flow. Second operand 3 states and 123 transitions. [2024-11-13 15:58:47,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 211 flow [2024-11-13 15:58:47,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:58:47,241 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 123 flow [2024-11-13 15:58:47,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-13 15:58:47,242 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-13 15:58:47,242 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 123 flow [2024-11-13 15:58:47,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-13 15:58:47,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:47,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 15:58:47,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:58:47,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:47,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1436654915, now seen corresponding path program 1 times [2024-11-13 15:58:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812689016] [2024-11-13 15:58:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:47,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:47,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812689016] [2024-11-13 15:58:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812689016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:47,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232825571] [2024-11-13 15:58:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:47,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:47,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:47,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:58:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:47,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:58:47,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:47,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:58:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:48,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232825571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:48,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:48,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-13 15:58:48,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840901670] [2024-11-13 15:58:48,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:48,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:58:48,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:58:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:58:48,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-13 15:58:48,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 123 flow. Second operand has 9 states, 9 states have (on average 29.333333333333332) internal successors, (264), 9 states have internal predecessors, (264), 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) [2024-11-13 15:58:48,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:48,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-13 15:58:48,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:48,365 INFO L124 PetriNetUnfolderBase]: 27/100 cut-off events. [2024-11-13 15:58:48,366 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-13 15:58:48,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 100 events. 27/100 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 18 based on Foata normal form. 20/119 useless extension candidates. Maximal degree in co-relation 179. Up to 57 conditions per place. [2024-11-13 15:58:48,367 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 23 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-13 15:58:48,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 128 flow [2024-11-13 15:58:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:58:48,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:58:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-13 15:58:48,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503731343283582 [2024-11-13 15:58:48,369 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 123 flow. Second operand 4 states and 135 transitions. [2024-11-13 15:58:48,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 128 flow [2024-11-13 15:58:48,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:58:48,370 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 54 flow [2024-11-13 15:58:48,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-11-13 15:58:48,371 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -27 predicate places. [2024-11-13 15:58:48,371 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 54 flow [2024-11-13 15:58:48,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.333333333333332) internal successors, (264), 9 states have internal predecessors, (264), 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) [2024-11-13 15:58:48,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:48,372 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-13 15:58:48,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:48,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:48,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:48,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:48,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1586628947, now seen corresponding path program 1 times [2024-11-13 15:58:48,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:48,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886390006] [2024-11-13 15:58:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:58:48,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:58:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:58:48,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:58:48,691 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:58:48,692 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-13 15:58:48,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-13 15:58:48,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-13 15:58:48,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-13 15:58:48,695 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-13 15:58:48,695 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-13 15:58:48,695 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 15:58:48,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:58:48,695 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 15:58:48,699 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 15:58:48,699 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 15:58:48,727 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:58:48,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 92 transitions, 200 flow [2024-11-13 15:58:48,754 INFO L124 PetriNetUnfolderBase]: 36/180 cut-off events. [2024-11-13 15:58:48,754 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 15:58:48,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 180 events. 36/180 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 748 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 9 conditions per place. [2024-11-13 15:58:48,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 92 transitions, 200 flow [2024-11-13 15:58:48,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 92 transitions, 200 flow [2024-11-13 15:58:48,762 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:58:48,762 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;@6608ce30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:58:48,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 15:58:48,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:58:48,765 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 15:58:48,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:58:48,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:48,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:58:48,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:48,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash 573451, now seen corresponding path program 1 times [2024-11-13 15:58:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:48,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096610318] [2024-11-13 15:58:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:48,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:48,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096610318] [2024-11-13 15:58:48,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096610318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:48,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:48,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:58:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107981206] [2024-11-13 15:58:48,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:48,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:48,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:48,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2024-11-13 15:58:48,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-13 15:58:48,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:48,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2024-11-13 15:58:48,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:49,886 INFO L124 PetriNetUnfolderBase]: 3559/6891 cut-off events. [2024-11-13 15:58:49,888 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-13 15:58:49,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 6891 events. 3559/6891 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52391 event pairs, 2735 based on Foata normal form. 1720/8315 useless extension candidates. Maximal degree in co-relation 9137. Up to 4731 conditions per place. [2024-11-13 15:58:49,936 INFO L140 encePairwiseOnDemand]: 72/92 looper letters, 55 selfloop transitions, 2 changer transitions 1/91 dead transitions. [2024-11-13 15:58:49,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 314 flow [2024-11-13 15:58:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:58:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:58:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-13 15:58:49,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.677536231884058 [2024-11-13 15:58:49,941 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 200 flow. Second operand 3 states and 187 transitions. [2024-11-13 15:58:49,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 314 flow [2024-11-13 15:58:49,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:58:49,948 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 164 flow [2024-11-13 15:58:49,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-11-13 15:58:49,949 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-13 15:58:49,949 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 164 flow [2024-11-13 15:58:49,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-13 15:58:49,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:49,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:58:49,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:58:49,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:49,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash 573452, now seen corresponding path program 1 times [2024-11-13 15:58:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81190751] [2024-11-13 15:58:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:49,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:50,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81190751] [2024-11-13 15:58:50,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81190751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:50,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:58:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179282947] [2024-11-13 15:58:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:50,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:50,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-13 15:58:50,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-13 15:58:50,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:50,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-13 15:58:50,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:50,997 INFO L124 PetriNetUnfolderBase]: 2998/6181 cut-off events. [2024-11-13 15:58:50,998 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-11-13 15:58:51,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 6181 events. 2998/6181 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 49078 event pairs, 1227 based on Foata normal form. 1/5817 useless extension candidates. Maximal degree in co-relation 9944. Up to 4562 conditions per place. [2024-11-13 15:58:51,046 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 47 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-13 15:58:51,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 284 flow [2024-11-13 15:58:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:58:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:58:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-13 15:58:51,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-13 15:58:51,048 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 164 flow. Second operand 3 states and 159 transitions. [2024-11-13 15:58:51,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 284 flow [2024-11-13 15:58:51,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:58:51,062 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 174 flow [2024-11-13 15:58:51,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-13 15:58:51,063 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-13 15:58:51,064 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 174 flow [2024-11-13 15:58:51,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-13 15:58:51,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:51,064 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 15:58:51,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:58:51,064 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:51,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1331668258, now seen corresponding path program 1 times [2024-11-13 15:58:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:51,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990941095] [2024-11-13 15:58:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:51,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:51,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990941095] [2024-11-13 15:58:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990941095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064335762] [2024-11-13 15:58:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:51,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:51,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:51,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:58:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:51,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:58:51,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:51,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:58:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:51,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:51,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064335762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:51,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:51,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-13 15:58:51,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781262551] [2024-11-13 15:58:51,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:51,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:58:51,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:51,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:58:51,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:58:51,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-11-13 15:58:51,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 174 flow. Second operand has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2024-11-13 15:58:51,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:51,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-11-13 15:58:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:52,123 INFO L124 PetriNetUnfolderBase]: 657/1295 cut-off events. [2024-11-13 15:58:52,124 INFO L125 PetriNetUnfolderBase]: For 245/245 co-relation queries the response was YES. [2024-11-13 15:58:52,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2554 conditions, 1295 events. 657/1295 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7534 event pairs, 96 based on Foata normal form. 220/1456 useless extension candidates. Maximal degree in co-relation 2218. Up to 840 conditions per place. [2024-11-13 15:58:52,134 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 53 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-11-13 15:58:52,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 276 flow [2024-11-13 15:58:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:58:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:58:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-11-13 15:58:52,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-11-13 15:58:52,136 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 174 flow. Second operand 5 states and 235 transitions. [2024-11-13 15:58:52,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 276 flow [2024-11-13 15:58:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 73 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:58:52,139 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 106 flow [2024-11-13 15:58:52,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-13 15:58:52,140 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -24 predicate places. [2024-11-13 15:58:52,142 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 106 flow [2024-11-13 15:58:52,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2024-11-13 15:58:52,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:52,143 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-13 15:58:52,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:52,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:52,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:52,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1583214982, now seen corresponding path program 1 times [2024-11-13 15:58:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:52,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188283970] [2024-11-13 15:58:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:58:52,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:58:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:58:52,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:58:52,432 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:58:52,432 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-13 15:58:52,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-13 15:58:52,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-13 15:58:52,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-13 15:58:52,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-13 15:58:52,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-13 15:58:52,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 15:58:52,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:58:52,433 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 15:58:52,433 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 15:58:52,433 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 15:58:52,468 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 15:58:52,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 117 transitions, 261 flow [2024-11-13 15:58:52,496 INFO L124 PetriNetUnfolderBase]: 54/276 cut-off events. [2024-11-13 15:58:52,497 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-13 15:58:52,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 276 events. 54/276 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1225 event pairs, 1 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 191. Up to 12 conditions per place. [2024-11-13 15:58:52,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 117 transitions, 261 flow [2024-11-13 15:58:52,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 117 transitions, 261 flow [2024-11-13 15:58:52,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:58:52,505 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;@6608ce30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:58:52,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 15:58:52,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:58:52,507 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 15:58:52,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:58:52,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:52,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:58:52,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:58:52,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash 689632, now seen corresponding path program 1 times [2024-11-13 15:58:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900924670] [2024-11-13 15:58:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:52,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900924670] [2024-11-13 15:58:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900924670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:52,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:52,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:58:52,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906283912] [2024-11-13 15:58:52,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:52,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:52,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:52,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 117 [2024-11-13 15:58:52,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-13 15:58:52,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:52,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 117 [2024-11-13 15:58:52,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:00,390 INFO L124 PetriNetUnfolderBase]: 53626/87325 cut-off events. [2024-11-13 15:59:00,390 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-13 15:59:00,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161738 conditions, 87325 events. 53626/87325 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 781289 event pairs, 43458 based on Foata normal form. 25258/109403 useless extension candidates. Maximal degree in co-relation 58750. Up to 63282 conditions per place. [2024-11-13 15:59:00,925 INFO L140 encePairwiseOnDemand]: 91/117 looper letters, 75 selfloop transitions, 2 changer transitions 1/119 dead transitions. [2024-11-13 15:59:00,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 119 transitions, 421 flow [2024-11-13 15:59:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:59:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-11-13 15:59:00,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-11-13 15:59:00,927 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 261 flow. Second operand 3 states and 243 transitions. [2024-11-13 15:59:00,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 119 transitions, 421 flow [2024-11-13 15:59:00,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:59:00,937 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 213 flow [2024-11-13 15:59:00,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-11-13 15:59:00,938 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-13 15:59:00,938 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 213 flow [2024-11-13 15:59:00,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-13 15:59:00,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:00,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:59:00,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:59:00,938 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:59:00,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:00,939 INFO L85 PathProgramCache]: Analyzing trace with hash 689633, now seen corresponding path program 1 times [2024-11-13 15:59:00,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:00,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448332019] [2024-11-13 15:59:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:00,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:01,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448332019] [2024-11-13 15:59:01,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448332019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:01,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:01,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:59:01,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539755884] [2024-11-13 15:59:01,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:01,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:01,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:01,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:01,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-11-13 15:59:01,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-11-13 15:59:01,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:01,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-11-13 15:59:01,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:06,467 INFO L124 PetriNetUnfolderBase]: 46695/77911 cut-off events. [2024-11-13 15:59:06,468 INFO L125 PetriNetUnfolderBase]: For 4252/4252 co-relation queries the response was YES. [2024-11-13 15:59:06,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145198 conditions, 77911 events. 46695/77911 cut-off events. For 4252/4252 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 708376 event pairs, 27954 based on Foata normal form. 1/74614 useless extension candidates. Maximal degree in co-relation 130511. Up to 63779 conditions per place. [2024-11-13 15:59:06,865 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 58 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-11-13 15:59:06,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 355 flow [2024-11-13 15:59:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:59:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-13 15:59:06,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5527065527065527 [2024-11-13 15:59:06,866 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 213 flow. Second operand 3 states and 194 transitions. [2024-11-13 15:59:06,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 355 flow [2024-11-13 15:59:07,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:59:07,325 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 223 flow [2024-11-13 15:59:07,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-11-13 15:59:07,325 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-13 15:59:07,326 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 223 flow [2024-11-13 15:59:07,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-11-13 15:59:07,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:07,326 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 15:59:07,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:59:07,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:59:07,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1257366080, now seen corresponding path program 1 times [2024-11-13 15:59:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:07,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84390730] [2024-11-13 15:59:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:07,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:07,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84390730] [2024-11-13 15:59:07,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84390730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:07,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642139853] [2024-11-13 15:59:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:07,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:07,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:07,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:07,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:59:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:07,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:59:07,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:07,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:59:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:07,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642139853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:08,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-13 15:59:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329022236] [2024-11-13 15:59:08,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:08,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:59:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:59:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:59:08,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 117 [2024-11-13 15:59:08,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 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) [2024-11-13 15:59:08,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:08,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 117 [2024-11-13 15:59:08,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:14,084 INFO L124 PetriNetUnfolderBase]: 47136/77422 cut-off events. [2024-11-13 15:59:14,085 INFO L125 PetriNetUnfolderBase]: For 4988/4988 co-relation queries the response was YES. [2024-11-13 15:59:14,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145127 conditions, 77422 events. 47136/77422 cut-off events. For 4988/4988 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 687736 event pairs, 19849 based on Foata normal form. 1120/77113 useless extension candidates. Maximal degree in co-relation 14547. Up to 49353 conditions per place. [2024-11-13 15:59:14,643 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 133 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2024-11-13 15:59:14,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 180 transitions, 679 flow [2024-11-13 15:59:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:59:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:59:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 401 transitions. [2024-11-13 15:59:14,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5712250712250713 [2024-11-13 15:59:14,648 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 223 flow. Second operand 6 states and 401 transitions. [2024-11-13 15:59:14,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 180 transitions, 679 flow [2024-11-13 15:59:14,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:59:14,658 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 237 flow [2024-11-13 15:59:14,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2024-11-13 15:59:14,659 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-11-13 15:59:14,660 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 237 flow [2024-11-13 15:59:14,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 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) [2024-11-13 15:59:14,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:14,661 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-13 15:59:14,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:59:14,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f00dd0e-d691-411f-9d53-7ebbe490baa0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:14,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:59:14,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash -906318834, now seen corresponding path program 1 times [2024-11-13 15:59:14,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:14,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275754845] [2024-11-13 15:59:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:59:14,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:59:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:59:14,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:59:14,968 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:59:14,968 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-13 15:59:14,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-13 15:59:14,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-13 15:59:14,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-13 15:59:14,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-13 15:59:14,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-13 15:59:14,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 15:59:14,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:59:14,970 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 15:59:14,971 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 15:59:14,971 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 15:59:15,015 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 15:59:15,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 142 transitions, 324 flow [2024-11-13 15:59:15,074 INFO L124 PetriNetUnfolderBase]: 80/416 cut-off events. [2024-11-13 15:59:15,074 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-13 15:59:15,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 416 events. 80/416 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2025 event pairs, 6 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 300. Up to 32 conditions per place. [2024-11-13 15:59:15,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 142 transitions, 324 flow [2024-11-13 15:59:15,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 142 transitions, 324 flow [2024-11-13 15:59:15,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:59:15,086 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;@6608ce30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:59:15,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 15:59:15,091 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:59:15,092 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 15:59:15,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:59:15,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:15,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:59:15,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-13 15:59:15,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash 830638, now seen corresponding path program 1 times [2024-11-13 15:59:15,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:15,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531181054] [2024-11-13 15:59:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:15,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531181054] [2024-11-13 15:59:15,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531181054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:15,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:15,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:59:15,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781663932] [2024-11-13 15:59:15,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:15,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:15,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:15,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-11-13 15:59:15,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 142 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2024-11-13 15:59:15,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:15,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-11-13 15:59:15,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand