./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/25_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/pthread-ext/25_stack.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 9f07ddd0bf7ae4134116576ef500b9c6d91475d3c23175717b2cac1146eab3b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:48:10,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:48:10,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:48:10,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:48:10,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:48:11,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:48:11,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:48:11,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:48:11,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:48:11,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:48:11,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:48:11,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:48:11,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:48:11,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:48:11,009 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:48:11,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:48:11,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:48:11,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:48:11,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:48:11,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:48:11,010 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:48:11,012 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:48:11,012 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:48:11,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:48:11,013 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:48:11,013 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:48:11,013 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:48:11,013 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:48:11,013 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:48:11,013 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:48:11,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:48:11,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:48:11,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:48:11,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:11,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:48:11,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:48:11,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:48:11,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:48:11,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:48:11,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:48:11,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:48:11,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:48:11,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f07ddd0bf7ae4134116576ef500b9c6d91475d3c23175717b2cac1146eab3b3 [2024-11-10 17:48:11,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:48:11,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:48:11,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:48:11,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:48:11,216 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:48:11,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/25_stack.i [2024-11-10 17:48:12,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:48:12,562 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:48:12,562 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack.i [2024-11-10 17:48:12,584 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79175a63/d851d621e7764e38bb111981cd9e2182/FLAG700f058d0 [2024-11-10 17:48:12,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79175a63/d851d621e7764e38bb111981cd9e2182 [2024-11-10 17:48:12,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:48:12,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:48:12,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:12,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:48:12,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:48:12,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:12,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2c8bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12, skipping insertion in model container [2024-11-10 17:48:12,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:12,634 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:48:12,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:12,912 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:48:12,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:12,979 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:48:12,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12 WrapperNode [2024-11-10 17:48:12,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:12,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:12,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:48:12,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:48:12,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:12,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,017 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 199 [2024-11-10 17:48:13,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:13,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:48:13,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:48:13,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:48:13,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,052 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-11-10 17:48:13,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,056 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:48:13,061 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:48:13,061 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:48:13,062 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:48:13,062 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (1/1) ... [2024-11-10 17:48:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:13,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:48:13,094 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) [2024-11-10 17:48:13,098 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 [2024-11-10 17:48:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 17:48:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 17:48:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:48:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:48:13,143 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:48:13,260 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:48:13,262 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:48:13,509 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:48:13,509 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:48:13,889 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:48:13,889 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:48:13,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:13 BoogieIcfgContainer [2024-11-10 17:48:13,890 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:48:13,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:48:13,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:48:13,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:48:13,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:48:12" (1/3) ... [2024-11-10 17:48:13,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa0ab3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:13, skipping insertion in model container [2024-11-10 17:48:13,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:12" (2/3) ... [2024-11-10 17:48:13,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa0ab3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:13, skipping insertion in model container [2024-11-10 17:48:13,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:13" (3/3) ... [2024-11-10 17:48:13,899 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack.i [2024-11-10 17:48:13,911 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:48:13,913 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-10 17:48:13,913 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:48:13,960 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:13,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 47 transitions, 98 flow [2024-11-10 17:48:14,011 INFO L124 PetriNetUnfolderBase]: 7/54 cut-off events. [2024-11-10 17:48:14,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:14,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 7/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2024-11-10 17:48:14,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 47 transitions, 98 flow [2024-11-10 17:48:14,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 47 transitions, 98 flow [2024-11-10 17:48:14,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:14,031 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;@5d7767c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:14,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 17:48:14,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:14,037 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 17:48:14,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:14,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:14,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 17:48:14,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2ASSERT_VIOLATIONARRAY_INDEX, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 17:48:14,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash 14857436, now seen corresponding path program 1 times [2024-11-10 17:48:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:14,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500993433] [2024-11-10 17:48:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:14,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:14,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500993433] [2024-11-10 17:48:14,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500993433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:14,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:14,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:14,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663828511] [2024-11-10 17:48:14,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:14,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:14,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 17:48:14,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-10 17:48:14,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:14,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 17:48:14,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:14,613 INFO L124 PetriNetUnfolderBase]: 51/149 cut-off events. [2024-11-10 17:48:14,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:14,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 149 events. 51/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 425 event pairs, 42 based on Foata normal form. 26/169 useless extension candidates. Maximal degree in co-relation 256. Up to 117 conditions per place. [2024-11-10 17:48:14,616 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 27 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-10 17:48:14,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 136 flow [2024-11-10 17:48:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 61 transitions. [2024-11-10 17:48:14,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-11-10 17:48:14,627 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 98 flow. Second operand 2 states and 61 transitions. [2024-11-10 17:48:14,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 136 flow [2024-11-10 17:48:14,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:14,632 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 82 flow [2024-11-10 17:48:14,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-11-10 17:48:14,637 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-11-10 17:48:14,637 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 82 flow [2024-11-10 17:48:14,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-10 17:48:14,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:14,638 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 17:48:14,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:48:14,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONARRAY_INDEX, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 17:48:14,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1446011437, now seen corresponding path program 1 times [2024-11-10 17:48:14,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:14,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710731111] [2024-11-10 17:48:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:14,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:48:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:14,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:48:14,958 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:48:14,959 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-10 17:48:14,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (6 of 8 remaining) [2024-11-10 17:48:14,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-10 17:48:14,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (4 of 8 remaining) [2024-11-10 17:48:14,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-10 17:48:14,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (2 of 8 remaining) [2024-11-10 17:48:14,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-10 17:48:14,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 8 remaining) [2024-11-10 17:48:14,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:48:14,963 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 17:48:14,965 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:48:14,966 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 17:48:15,006 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 84 transitions, 178 flow [2024-11-10 17:48:15,026 INFO L124 PetriNetUnfolderBase]: 13/99 cut-off events. [2024-11-10 17:48:15,027 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 17:48:15,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 99 events. 13/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2024-11-10 17:48:15,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 84 transitions, 178 flow [2024-11-10 17:48:15,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 84 transitions, 178 flow [2024-11-10 17:48:15,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:15,030 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;@5d7767c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:15,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-10 17:48:15,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:15,033 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 17:48:15,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:15,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:15,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 17:48:15,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2ASSERT_VIOLATIONARRAY_INDEX, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-10 17:48:15,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash 17443292, now seen corresponding path program 1 times [2024-11-10 17:48:15,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:15,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887719346] [2024-11-10 17:48:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:15,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:15,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:15,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887719346] [2024-11-10 17:48:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887719346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:15,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:15,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56104726] [2024-11-10 17:48:15,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:15,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:15,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:15,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:15,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2024-11-10 17:48:15,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-11-10 17:48:15,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:15,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2024-11-10 17:48:15,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:15,719 INFO L124 PetriNetUnfolderBase]: 2691/4714 cut-off events. [2024-11-10 17:48:15,720 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-10 17:48:15,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8928 conditions, 4714 events. 2691/4714 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 28714 event pairs, 2352 based on Foata normal form. 642/5169 useless extension candidates. Maximal degree in co-relation 6987. Up to 4143 conditions per place. [2024-11-10 17:48:15,750 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 51 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2024-11-10 17:48:15,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 258 flow [2024-11-10 17:48:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 109 transitions. [2024-11-10 17:48:15,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-11-10 17:48:15,753 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 178 flow. Second operand 2 states and 109 transitions. [2024-11-10 17:48:15,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 258 flow [2024-11-10 17:48:15,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 258 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:15,755 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 156 flow [2024-11-10 17:48:15,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-11-10 17:48:15,756 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-11-10 17:48:15,756 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 156 flow [2024-11-10 17:48:15,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-11-10 17:48:15,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:15,756 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 17:48:15,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:48:15,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONARRAY_INDEX, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-10 17:48:15,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash 932814380, now seen corresponding path program 1 times [2024-11-10 17:48:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:15,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856720534] [2024-11-10 17:48:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:15,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:48:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:15,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:48:15,991 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:48:15,991 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-10 17:48:15,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (9 of 11 remaining) [2024-11-10 17:48:15,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (8 of 11 remaining) [2024-11-10 17:48:15,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (7 of 11 remaining) [2024-11-10 17:48:15,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2024-11-10 17:48:15,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (5 of 11 remaining) [2024-11-10 17:48:15,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2024-11-10 17:48:15,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (3 of 11 remaining) [2024-11-10 17:48:15,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (2 of 11 remaining) [2024-11-10 17:48:15,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 11 remaining) [2024-11-10 17:48:15,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 11 remaining) [2024-11-10 17:48:15,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:48:15,994 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 17:48:15,994 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:48:15,994 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 17:48:16,038 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:16,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 260 flow [2024-11-10 17:48:16,055 INFO L124 PetriNetUnfolderBase]: 19/144 cut-off events. [2024-11-10 17:48:16,055 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 17:48:16,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 144 events. 19/144 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 413 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2024-11-10 17:48:16,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 121 transitions, 260 flow [2024-11-10 17:48:16,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 121 transitions, 260 flow [2024-11-10 17:48:16,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:16,061 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;@5d7767c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:16,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-10 17:48:16,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:16,063 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 17:48:16,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:16,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:16,064 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 17:48:16,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2ASSERT_VIOLATIONARRAY_INDEX, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 10 more)] === [2024-11-10 17:48:16,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash 21168156, now seen corresponding path program 1 times [2024-11-10 17:48:16,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:16,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740769013] [2024-11-10 17:48:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:16,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740769013] [2024-11-10 17:48:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740769013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:16,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:16,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:16,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899996803] [2024-11-10 17:48:16,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:16,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:16,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 121 [2024-11-10 17:48:16,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 260 flow. Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2024-11-10 17:48:16,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:16,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 121 [2024-11-10 17:48:16,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:25,282 INFO L124 PetriNetUnfolderBase]: 94035/137125 cut-off events. [2024-11-10 17:48:25,282 INFO L125 PetriNetUnfolderBase]: For 3146/3146 co-relation queries the response was YES. [2024-11-10 17:48:25,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265244 conditions, 137125 events. 94035/137125 cut-off events. For 3146/3146 co-relation queries the response was YES. Maximal size of possible extension queue 2600. Compared 1036569 event pairs, 83664 based on Foata normal form. 15646/147354 useless extension candidates. Maximal degree in co-relation 151245. Up to 126111 conditions per place. [2024-11-10 17:48:26,158 INFO L140 encePairwiseOnDemand]: 113/121 looper letters, 75 selfloop transitions, 0 changer transitions 0/107 dead transitions. [2024-11-10 17:48:26,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 382 flow [2024-11-10 17:48:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 157 transitions. [2024-11-10 17:48:26,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6487603305785123 [2024-11-10 17:48:26,161 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 260 flow. Second operand 2 states and 157 transitions. [2024-11-10 17:48:26,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 382 flow [2024-11-10 17:48:26,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 380 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:26,167 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 230 flow [2024-11-10 17:48:26,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-11-10 17:48:26,167 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, -6 predicate places. [2024-11-10 17:48:26,168 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 230 flow [2024-11-10 17:48:26,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2024-11-10 17:48:26,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:26,168 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 17:48:26,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:48:26,169 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONARRAY_INDEX, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 10 more)] === [2024-11-10 17:48:26,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash -246484108, now seen corresponding path program 1 times [2024-11-10 17:48:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87121433] [2024-11-10 17:48:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:26,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:48:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:26,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:48:26,364 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:48:26,365 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-10 17:48:26,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (12 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (10 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (8 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (6 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (5 of 14 remaining) [2024-11-10 17:48:26,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2024-11-10 17:48:26,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (3 of 14 remaining) [2024-11-10 17:48:26,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONARRAY_INDEX (2 of 14 remaining) [2024-11-10 17:48:26,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 14 remaining) [2024-11-10 17:48:26,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 14 remaining) [2024-11-10 17:48:26,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:48:26,368 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 17:48:26,369 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:48:26,369 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 17:48:26,420 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 158 transitions, 344 flow [2024-11-10 17:48:26,440 INFO L124 PetriNetUnfolderBase]: 25/189 cut-off events. [2024-11-10 17:48:26,440 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 17:48:26,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 189 events. 25/189 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 646 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 156. Up to 10 conditions per place. [2024-11-10 17:48:26,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 158 transitions, 344 flow [2024-11-10 17:48:26,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 158 transitions, 344 flow [2024-11-10 17:48:26,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:26,446 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;@5d7767c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:26,446 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-10 17:48:26,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:26,449 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 17:48:26,449 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:26,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:26,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 17:48:26,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2ASSERT_VIOLATIONARRAY_INDEX, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 13 more)] === [2024-11-10 17:48:26,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 26032028, now seen corresponding path program 1 times [2024-11-10 17:48:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772618694] [2024-11-10 17:48:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:26,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772618694] [2024-11-10 17:48:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772618694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:26,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:26,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378589234] [2024-11-10 17:48:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:26,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:26,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 158 [2024-11-10 17:48:26,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 158 transitions, 344 flow. Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-11-10 17:48:26,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:26,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 158 [2024-11-10 17:48:26,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand