./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:28:24,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:28:24,381 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:28:24,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:28:24,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:28:24,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:28:24,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:28:24,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:28:24,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:28:24,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:28:24,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:28:24,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:28:24,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:28:24,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:28:24,420 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:28:24,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:28:24,420 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:28:24,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:28:24,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:28:24,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:28:24,421 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:28:24,426 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:28:24,426 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:28:24,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:28:24,426 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:28:24,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:28:24,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:28:24,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:28:24,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:28:24,427 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:28:24,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:28:24,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:28:24,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:28:24,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:28:24,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:28:24,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:28:24,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:28:24,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:28:24,433 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:28:24,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:28:24,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:28:24,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:28:24,435 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2024-11-17 03:28:24,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:28:24,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:28:24,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:28:24,713 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:28:24,714 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:28:24,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-17 03:28:26,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:28:26,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:28:26,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-17 03:28:26,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510503d50/545b725959ae4bb7a81c97774d9685f7/FLAG6f021e139 [2024-11-17 03:28:26,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510503d50/545b725959ae4bb7a81c97774d9685f7 [2024-11-17 03:28:26,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:28:26,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:28:26,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:28:26,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:28:26,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:28:26,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:28:26" (1/1) ... [2024-11-17 03:28:26,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1181210f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:26, skipping insertion in model container [2024-11-17 03:28:26,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:28:26" (1/1) ... [2024-11-17 03:28:26,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:28:26,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:28:26,952 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:28:27,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:28:27,043 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:28:27,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27 WrapperNode [2024-11-17 03:28:27,044 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:28:27,045 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:28:27,045 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:28:27,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:28:27,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,102 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2024-11-17 03:28:27,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:28:27,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:28:27,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:28:27,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:28:27,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,137 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 10, 2]. 53 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 10, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-17 03:28:27,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,145 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:28:27,165 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:28:27,165 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:28:27,165 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:28:27,166 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (1/1) ... [2024-11-17 03:28:27,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:28:27,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:28:27,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:28:27,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:28:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:28:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:28:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:28:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:28:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:28:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:28:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:28:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:28:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:28:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:28:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:28:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:28:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:28:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:28:27,252 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:28:27,373 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:28:27,375 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:28:27,565 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 03:28:27,565 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 03:28:27,604 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:28:27,604 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:28:27,761 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:28:27,761 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:28:27,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:28:27 BoogieIcfgContainer [2024-11-17 03:28:27,761 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:28:27,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:28:27,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:28:27,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:28:27,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:28:26" (1/3) ... [2024-11-17 03:28:27,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be22926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:28:27, skipping insertion in model container [2024-11-17 03:28:27,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:27" (2/3) ... [2024-11-17 03:28:27,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be22926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:28:27, skipping insertion in model container [2024-11-17 03:28:27,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:28:27" (3/3) ... [2024-11-17 03:28:27,771 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-11-17 03:28:27,784 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:28:27,784 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-17 03:28:27,784 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:28:27,825 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:28:27,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 69 transitions, 145 flow [2024-11-17 03:28:27,909 INFO L124 PetriNetUnfolderBase]: 19/107 cut-off events. [2024-11-17 03:28:27,909 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:28:27,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 19/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 382 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2024-11-17 03:28:27,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 69 transitions, 145 flow [2024-11-17 03:28:27,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 69 transitions, 145 flow [2024-11-17 03:28:27,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:28:27,943 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;@61a462cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:28:27,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:28:27,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:28:27,949 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:28:27,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:28:27,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:27,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:27,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:27,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 9790078, now seen corresponding path program 1 times [2024-11-17 03:28:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053283654] [2024-11-17 03:28:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053283654] [2024-11-17 03:28:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053283654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:28,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:28,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:28,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551849706] [2024-11-17 03:28:28,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:28,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:28,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:28,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 69 [2024-11-17 03:28:28,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-17 03:28:28,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:28,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 69 [2024-11-17 03:28:28,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:28,564 INFO L124 PetriNetUnfolderBase]: 127/454 cut-off events. [2024-11-17 03:28:28,564 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:28:28,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 454 events. 127/454 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2386 event pairs, 108 based on Foata normal form. 152/588 useless extension candidates. Maximal degree in co-relation 693. Up to 252 conditions per place. [2024-11-17 03:28:28,570 INFO L140 encePairwiseOnDemand]: 53/69 looper letters, 33 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2024-11-17 03:28:28,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 205 flow [2024-11-17 03:28:28,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-17 03:28:28,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6618357487922706 [2024-11-17 03:28:28,586 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 145 flow. Second operand 3 states and 137 transitions. [2024-11-17 03:28:28,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 205 flow [2024-11-17 03:28:28,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:28:28,593 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 117 flow [2024-11-17 03:28:28,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=58, PETRI_TRANSITIONS=53} [2024-11-17 03:28:28,598 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-11-17 03:28:28,598 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 117 flow [2024-11-17 03:28:28,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-17 03:28:28,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:28,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:28,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:28:28,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:28,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 9790079, now seen corresponding path program 1 times [2024-11-17 03:28:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474292231] [2024-11-17 03:28:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:28,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474292231] [2024-11-17 03:28:28,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474292231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:28,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:28,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570142656] [2024-11-17 03:28:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:28,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:28,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:28,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 69 [2024-11-17 03:28:28,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 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) [2024-11-17 03:28:28,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:28,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 69 [2024-11-17 03:28:28,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:28,953 INFO L124 PetriNetUnfolderBase]: 126/462 cut-off events. [2024-11-17 03:28:28,953 INFO L125 PetriNetUnfolderBase]: For 15/16 co-relation queries the response was YES. [2024-11-17 03:28:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 462 events. 126/462 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2358 event pairs, 117 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 732. Up to 270 conditions per place. [2024-11-17 03:28:28,960 INFO L140 encePairwiseOnDemand]: 65/69 looper letters, 35 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-17 03:28:28,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 211 flow [2024-11-17 03:28:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-17 03:28:28,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-17 03:28:28,962 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 117 flow. Second operand 3 states and 123 transitions. [2024-11-17 03:28:28,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 211 flow [2024-11-17 03:28:28,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:28:28,968 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 123 flow [2024-11-17 03:28:28,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=58, PETRI_TRANSITIONS=53} [2024-11-17 03:28:28,969 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-11-17 03:28:28,969 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 123 flow [2024-11-17 03:28:28,970 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) [2024-11-17 03:28:28,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:28,970 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-17 03:28:28,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:28:28,971 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:28,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash 942089864, now seen corresponding path program 1 times [2024-11-17 03:28:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:28,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112218860] [2024-11-17 03:28:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:28,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112218860] [2024-11-17 03:28:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112218860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:28:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530847449] [2024-11-17 03:28:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:29,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:28:29,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:28:29,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:28:29,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:28:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:29,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:28:29,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:28:29,352 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 [2024-11-17 03:28:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:29,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:28:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:29,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530847449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:28:29,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:28:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-17 03:28:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770711981] [2024-11-17 03:28:29,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:28:29,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 03:28:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:29,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 03:28:29,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:28:29,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 69 [2024-11-17 03:28:29,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 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) [2024-11-17 03:28:29,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:29,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 69 [2024-11-17 03:28:29,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:29,728 INFO L124 PetriNetUnfolderBase]: 27/101 cut-off events. [2024-11-17 03:28:29,728 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:28:29,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 101 events. 27/101 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 286 event pairs, 0 based on Foata normal form. 20/118 useless extension candidates. Maximal degree in co-relation 172. Up to 57 conditions per place. [2024-11-17 03:28:29,729 INFO L140 encePairwiseOnDemand]: 65/69 looper letters, 23 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-17 03:28:29,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 134 flow [2024-11-17 03:28:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:28:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:28:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-17 03:28:29,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-11-17 03:28:29,731 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 123 flow. Second operand 4 states and 135 transitions. [2024-11-17 03:28:29,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 134 flow [2024-11-17 03:28:29,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:28:29,733 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2024-11-17 03:28:29,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-11-17 03:28:29,733 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -27 predicate places. [2024-11-17 03:28:29,734 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2024-11-17 03:28:29,734 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) [2024-11-17 03:28:29,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:29,734 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-17 03:28:29,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:28:29,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:28:29,939 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:29,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -859985008, now seen corresponding path program 1 times [2024-11-17 03:28:29,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:29,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803974659] [2024-11-17 03:28:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:29,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:29,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:28:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:29,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:28:29,992 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:28:29,993 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-17 03:28:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-17 03:28:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-17 03:28:29,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-17 03:28:29,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-17 03:28:29,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-17 03:28:29,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:28:29,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:28:29,997 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:28:30,001 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:28:30,002 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:28:30,028 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:28:30,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 96 transitions, 208 flow [2024-11-17 03:28:30,045 INFO L124 PetriNetUnfolderBase]: 34/187 cut-off events. [2024-11-17 03:28:30,046 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 03:28:30,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 187 events. 34/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 743 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2024-11-17 03:28:30,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 96 transitions, 208 flow [2024-11-17 03:28:30,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 96 transitions, 208 flow [2024-11-17 03:28:30,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:28:30,055 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;@61a462cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:28:30,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:28:30,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:28:30,058 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:28:30,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:28:30,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:30,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:30,058 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:30,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash 12745342, now seen corresponding path program 1 times [2024-11-17 03:28:30,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:30,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519016680] [2024-11-17 03:28:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:30,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:30,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519016680] [2024-11-17 03:28:30,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519016680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:30,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:30,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580631443] [2024-11-17 03:28:30,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:30,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:30,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:30,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:30,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:30,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-17 03:28:30,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 96 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-17 03:28:30,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:30,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-17 03:28:30,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:30,856 INFO L124 PetriNetUnfolderBase]: 2802/5946 cut-off events. [2024-11-17 03:28:30,856 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-17 03:28:30,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10531 conditions, 5946 events. 2802/5946 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 46817 event pairs, 2394 based on Foata normal form. 2492/8225 useless extension candidates. Maximal degree in co-relation 7677. Up to 3889 conditions per place. [2024-11-17 03:28:30,896 INFO L140 encePairwiseOnDemand]: 74/96 looper letters, 53 selfloop transitions, 2 changer transitions 1/93 dead transitions. [2024-11-17 03:28:30,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 314 flow [2024-11-17 03:28:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-17 03:28:30,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909722222222222 [2024-11-17 03:28:30,898 INFO L175 Difference]: Start difference. First operand has 81 places, 96 transitions, 208 flow. Second operand 3 states and 199 transitions. [2024-11-17 03:28:30,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 314 flow [2024-11-17 03:28:30,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 93 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:28:30,904 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 168 flow [2024-11-17 03:28:30,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-11-17 03:28:30,905 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -1 predicate places. [2024-11-17 03:28:30,905 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 168 flow [2024-11-17 03:28:30,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-17 03:28:30,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:30,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:30,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:28:30,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:30,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 12745343, now seen corresponding path program 1 times [2024-11-17 03:28:30,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:30,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433971611] [2024-11-17 03:28:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:30,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433971611] [2024-11-17 03:28:30,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433971611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:30,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:30,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:30,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530585656] [2024-11-17 03:28:30,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:30,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:30,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:30,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:30,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 96 [2024-11-17 03:28:30,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-11-17 03:28:30,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:30,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 96 [2024-11-17 03:28:30,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:31,694 INFO L124 PetriNetUnfolderBase]: 2783/6159 cut-off events. [2024-11-17 03:28:31,694 INFO L125 PetriNetUnfolderBase]: For 212/226 co-relation queries the response was YES. [2024-11-17 03:28:31,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10818 conditions, 6159 events. 2783/6159 cut-off events. For 212/226 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 50091 event pairs, 2763 based on Foata normal form. 1/5729 useless extension candidates. Maximal degree in co-relation 9950. Up to 4467 conditions per place. [2024-11-17 03:28:31,735 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 47 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-17 03:28:31,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 288 flow [2024-11-17 03:28:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-17 03:28:31,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-11-17 03:28:31,738 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 168 flow. Second operand 3 states and 165 transitions. [2024-11-17 03:28:31,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 288 flow [2024-11-17 03:28:31,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:28:31,749 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 178 flow [2024-11-17 03:28:31,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-11-17 03:28:31,751 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -1 predicate places. [2024-11-17 03:28:31,752 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 178 flow [2024-11-17 03:28:31,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-11-17 03:28:31,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:31,753 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-17 03:28:31,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:28:31,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:31,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1195328129, now seen corresponding path program 1 times [2024-11-17 03:28:31,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:31,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681299706] [2024-11-17 03:28:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:31,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681299706] [2024-11-17 03:28:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681299706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:28:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143625384] [2024-11-17 03:28:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:31,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:28:31,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:28:31,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:28:31,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:28:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:31,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:28:31,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:28:31,966 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 [2024-11-17 03:28:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:32,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:28:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143625384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:28:32,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:28:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-17 03:28:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259217892] [2024-11-17 03:28:32,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:28:32,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:28:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:28:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:28:32,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-17 03:28:32,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 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) [2024-11-17 03:28:32,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:32,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-17 03:28:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:32,903 INFO L124 PetriNetUnfolderBase]: 2692/6044 cut-off events. [2024-11-17 03:28:32,903 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-11-17 03:28:32,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10623 conditions, 6044 events. 2692/6044 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 50069 event pairs, 109 based on Foata normal form. 120/5848 useless extension candidates. Maximal degree in co-relation 10538. Up to 2919 conditions per place. [2024-11-17 03:28:32,943 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 84 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-17 03:28:32,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 123 transitions, 448 flow [2024-11-17 03:28:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:28:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:28:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 276 transitions. [2024-11-17 03:28:32,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-17 03:28:32,945 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 178 flow. Second operand 5 states and 276 transitions. [2024-11-17 03:28:32,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 123 transitions, 448 flow [2024-11-17 03:28:32,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:28:32,949 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 184 flow [2024-11-17 03:28:32,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-17 03:28:32,949 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-17 03:28:32,950 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 184 flow [2024-11-17 03:28:32,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 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) [2024-11-17 03:28:32,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:32,950 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1] [2024-11-17 03:28:32,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:28:33,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-17 03:28:33,155 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:33,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1676748369, now seen corresponding path program 1 times [2024-11-17 03:28:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:33,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569985164] [2024-11-17 03:28:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:33,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:28:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:33,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:28:33,185 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:28:33,186 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-17 03:28:33,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-17 03:28:33,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-17 03:28:33,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-17 03:28:33,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-17 03:28:33,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-17 03:28:33,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:28:33,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:28:33,187 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:28:33,188 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:28:33,188 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:28:33,209 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 03:28:33,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 123 transitions, 273 flow [2024-11-17 03:28:33,230 INFO L124 PetriNetUnfolderBase]: 54/294 cut-off events. [2024-11-17 03:28:33,230 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:28:33,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 294 events. 54/294 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1281 event pairs, 1 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 198. Up to 16 conditions per place. [2024-11-17 03:28:33,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 123 transitions, 273 flow [2024-11-17 03:28:33,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 123 transitions, 273 flow [2024-11-17 03:28:33,235 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:28:33,236 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;@61a462cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:28:33,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:28:33,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:28:33,237 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:28:33,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:28:33,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:33,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:33,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:33,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 16531774, now seen corresponding path program 1 times [2024-11-17 03:28:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:33,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049458327] [2024-11-17 03:28:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:33,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049458327] [2024-11-17 03:28:33,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049458327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:33,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:33,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352893499] [2024-11-17 03:28:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:33,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:33,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:33,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-11-17 03:28:33,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-17 03:28:33,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:33,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-11-17 03:28:33,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:39,950 INFO L124 PetriNetUnfolderBase]: 44558/75955 cut-off events. [2024-11-17 03:28:39,950 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-17 03:28:40,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139188 conditions, 75955 events. 44558/75955 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 1971. Compared 703783 event pairs, 37891 based on Foata normal form. 35640/109295 useless extension candidates. Maximal degree in co-relation 50689. Up to 53237 conditions per place. [2024-11-17 03:28:40,666 INFO L140 encePairwiseOnDemand]: 95/123 looper letters, 73 selfloop transitions, 2 changer transitions 1/123 dead transitions. [2024-11-17 03:28:40,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 425 flow [2024-11-17 03:28:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2024-11-17 03:28:40,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-11-17 03:28:40,671 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 273 flow. Second operand 3 states and 261 transitions. [2024-11-17 03:28:40,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 425 flow [2024-11-17 03:28:40,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:28:40,679 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 221 flow [2024-11-17 03:28:40,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-11-17 03:28:40,681 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2024-11-17 03:28:40,681 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 221 flow [2024-11-17 03:28:40,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-17 03:28:40,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:40,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:40,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:28:40,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:40,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 16531775, now seen corresponding path program 1 times [2024-11-17 03:28:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:40,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781789389] [2024-11-17 03:28:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:40,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:40,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781789389] [2024-11-17 03:28:40,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781789389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:40,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:40,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519568350] [2024-11-17 03:28:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:40,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:40,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:40,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-17 03:28:40,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-17 03:28:40,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:40,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-17 03:28:40,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:46,345 INFO L124 PetriNetUnfolderBase]: 43801/77090 cut-off events. [2024-11-17 03:28:46,345 INFO L125 PetriNetUnfolderBase]: For 2921/2921 co-relation queries the response was YES. [2024-11-17 03:28:46,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140449 conditions, 77090 events. 43801/77090 cut-off events. For 2921/2921 co-relation queries the response was YES. Maximal size of possible extension queue 2074. Compared 743151 event pairs, 28324 based on Foata normal form. 1/73389 useless extension candidates. Maximal degree in co-relation 128782. Up to 61215 conditions per place. [2024-11-17 03:28:46,760 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 58 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-11-17 03:28:46,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 363 flow [2024-11-17 03:28:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2024-11-17 03:28:46,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5582655826558266 [2024-11-17 03:28:46,762 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 221 flow. Second operand 3 states and 206 transitions. [2024-11-17 03:28:46,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 363 flow [2024-11-17 03:28:46,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:28:46,906 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 231 flow [2024-11-17 03:28:46,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-11-17 03:28:46,907 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2024-11-17 03:28:46,907 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 231 flow [2024-11-17 03:28:46,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-17 03:28:46,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:46,907 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-17 03:28:46,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:28:46,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:46,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1305276139, now seen corresponding path program 1 times [2024-11-17 03:28:46,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:46,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088008043] [2024-11-17 03:28:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:46,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:47,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088008043] [2024-11-17 03:28:47,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088008043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:28:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227508236] [2024-11-17 03:28:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:47,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:28:47,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:28:47,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:28:47,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:28:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:47,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:28:47,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:28:47,129 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 [2024-11-17 03:28:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:47,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:28:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:47,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227508236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:28:47,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:28:47,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-17 03:28:47,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639101329] [2024-11-17 03:28:47,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:28:47,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 03:28:47,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:47,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 03:28:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:28:47,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-11-17 03:28:47,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 231 flow. Second operand has 9 states, 9 states have (on average 49.333333333333336) internal successors, (444), 9 states have internal predecessors, (444), 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) [2024-11-17 03:28:47,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:47,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-11-17 03:28:47,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:48,935 INFO L124 PetriNetUnfolderBase]: 10557/18515 cut-off events. [2024-11-17 03:28:48,935 INFO L125 PetriNetUnfolderBase]: For 4047/4047 co-relation queries the response was YES. [2024-11-17 03:28:48,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35075 conditions, 18515 events. 10557/18515 cut-off events. For 4047/4047 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 150225 event pairs, 1696 based on Foata normal form. 2220/20589 useless extension candidates. Maximal degree in co-relation 31403. Up to 11100 conditions per place. [2024-11-17 03:28:49,044 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 92 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-11-17 03:28:49,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 128 transitions, 476 flow [2024-11-17 03:28:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:28:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:28:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-11-17 03:28:49,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2024-11-17 03:28:49,047 INFO L175 Difference]: Start difference. First operand has 102 places, 96 transitions, 231 flow. Second operand 6 states and 384 transitions. [2024-11-17 03:28:49,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 128 transitions, 476 flow [2024-11-17 03:28:49,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:28:49,053 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 168 flow [2024-11-17 03:28:49,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-11-17 03:28:49,054 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -23 predicate places. [2024-11-17 03:28:49,054 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 168 flow [2024-11-17 03:28:49,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.333333333333336) internal successors, (444), 9 states have internal predecessors, (444), 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) [2024-11-17 03:28:49,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:49,055 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1] [2024-11-17 03:28:49,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:28:49,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:28:49,256 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:49,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1546347153, now seen corresponding path program 1 times [2024-11-17 03:28:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914350706] [2024-11-17 03:28:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:49,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:49,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:28:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:49,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:28:49,310 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:28:49,310 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-17 03:28:49,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-17 03:28:49,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-17 03:28:49,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-17 03:28:49,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-17 03:28:49,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-17 03:28:49,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:28:49,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:28:49,313 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:28:49,314 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:28:49,314 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:28:49,347 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-17 03:28:49,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 150 transitions, 340 flow [2024-11-17 03:28:49,397 INFO L124 PetriNetUnfolderBase]: 86/457 cut-off events. [2024-11-17 03:28:49,398 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-17 03:28:49,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 457 events. 86/457 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2147 event pairs, 6 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 318. Up to 32 conditions per place. [2024-11-17 03:28:49,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 150 transitions, 340 flow [2024-11-17 03:28:49,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 150 transitions, 340 flow [2024-11-17 03:28:49,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:28:49,408 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;@61a462cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:28:49,408 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:28:49,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:28:49,410 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:28:49,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:28:49,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:49,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:49,411 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-17 03:28:49,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash 21149374, now seen corresponding path program 1 times [2024-11-17 03:28:49,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:49,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566706639] [2024-11-17 03:28:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:49,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:49,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:49,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566706639] [2024-11-17 03:28:49,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566706639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:49,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:49,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:49,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219345098] [2024-11-17 03:28:49,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:49,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:49,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:49,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 150 [2024-11-17 03:28:49,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 150 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2024-11-17 03:28:49,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:49,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 150 [2024-11-17 03:28:49,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand