./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:10:09,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:10:09,987 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:10:09,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:10:09,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:10:10,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:10:10,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:10:10,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:10:10,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:10:10,021 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:10:10,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:10:10,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:10:10,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:10:10,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:10:10,023 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:10:10,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:10:10,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:10:10,025 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:10:10,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:10:10,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:10:10,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:10:10,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:10:10,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:10:10,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:10:10,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:10:10,028 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:10:10,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:10:10,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:10:10,032 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:10:10,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:10:10,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:10:10,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:10:10,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:10:10,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:10:10,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:10:10,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:10:10,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:10:10,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:10:10,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:10:10,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:10:10,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:10:10,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:10:10,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2024-11-10 10:10:10,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:10:10,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:10:10,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:10:10,304 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:10:10,304 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:10:10,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-10 10:10:11,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:10:12,100 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:10:12,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-10 10:10:12,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518e51074/6fab96a3d50d4f20b5f8e1472f5fca28/FLAG393fdacaa [2024-11-10 10:10:12,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518e51074/6fab96a3d50d4f20b5f8e1472f5fca28 [2024-11-10 10:10:12,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:10:12,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:10:12,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:10:12,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:10:12,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:10:12,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:12,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7797306f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12, skipping insertion in model container [2024-11-10 10:10:12,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:12,470 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:10:12,859 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30703,30716] [2024-11-10 10:10:12,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:10:12,886 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:10:12,935 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30703,30716] [2024-11-10 10:10:12,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:10:12,984 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:10:12,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12 WrapperNode [2024-11-10 10:10:12,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:10:12,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:10:12,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:10:12,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:10:12,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,032 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-11-10 10:10:13,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:10:13,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:10:13,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:10:13,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:10:13,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,058 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-10 10:10:13,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,063 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:10:13,069 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:10:13,069 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:10:13,069 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:10:13,071 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (1/1) ... [2024-11-10 10:10:13,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:10:13,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:10:13,117 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 10:10:13,122 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 10:10:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-10 10:10:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-10 10:10:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 10:10:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 10:10:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:10:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:10:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:10:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:10:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:10:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:10:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:10:13,180 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 10:10:13,334 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:10:13,336 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:10:13,507 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:10:13,507 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:10:13,598 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:10:13,598 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:10:13,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:10:13 BoogieIcfgContainer [2024-11-10 10:10:13,598 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:10:13,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:10:13,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:10:13,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:10:13,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:10:12" (1/3) ... [2024-11-10 10:10:13,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ffeb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:10:13, skipping insertion in model container [2024-11-10 10:10:13,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:10:12" (2/3) ... [2024-11-10 10:10:13,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ffeb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:10:13, skipping insertion in model container [2024-11-10 10:10:13,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:10:13" (3/3) ... [2024-11-10 10:10:13,611 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2024-11-10 10:10:13,629 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:10:13,630 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:10:13,630 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:10:13,678 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:10:13,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 84 flow [2024-11-10 10:10:13,743 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2024-11-10 10:10:13,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:10:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 6/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2024-11-10 10:10:13,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 84 flow [2024-11-10 10:10:13,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 37 transitions, 81 flow [2024-11-10 10:10:13,762 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:10:13,769 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=LoopHeads, 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;@33280692, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:10:13,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:10:13,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:10:13,780 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2024-11-10 10:10:13,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:10:13,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:10:13,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:10:13,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:10:13,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:10:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash -387211930, now seen corresponding path program 1 times [2024-11-10 10:10:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:10:13,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558326574] [2024-11-10 10:10:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:10:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:10:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:10:14,070 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 10:10:14,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:10:14,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558326574] [2024-11-10 10:10:14,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558326574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:10:14,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:10:14,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:10:14,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890099385] [2024-11-10 10:10:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:10:14,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:10:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:10:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:10:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:10:14,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 10:10:14,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 10:10:14,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:10:14,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 10:10:14,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:10:14,311 INFO L124 PetriNetUnfolderBase]: 140/278 cut-off events. [2024-11-10 10:10:14,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:10:14,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 278 events. 140/278 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1430 event pairs, 130 based on Foata normal form. 142/409 useless extension candidates. Maximal degree in co-relation 528. Up to 248 conditions per place. [2024-11-10 10:10:14,318 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 18 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2024-11-10 10:10:14,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 101 flow [2024-11-10 10:10:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:10:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:10:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-10 10:10:14,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 10:10:14,334 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 81 flow. Second operand 3 states and 57 transitions. [2024-11-10 10:10:14,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 101 flow [2024-11-10 10:10:14,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:10:14,341 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 64 flow [2024-11-10 10:10:14,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-10 10:10:14,351 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-11-10 10:10:14,352 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 64 flow [2024-11-10 10:10:14,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 10:10:14,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:10:14,353 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 10:10:14,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:10:14,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:10:14,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:10:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1568466529, now seen corresponding path program 1 times [2024-11-10 10:10:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:10:14,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738591228] [2024-11-10 10:10:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:10:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:10:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:10:14,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:10:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:10:14,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:10:14,429 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:10:14,433 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 10:10:14,436 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-10 10:10:14,436 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 10:10:14,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-10 10:10:14,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:10:14,438 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:10:14,442 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:10:14,443 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:10:14,482 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:10:14,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 152 flow [2024-11-10 10:10:14,509 INFO L124 PetriNetUnfolderBase]: 8/61 cut-off events. [2024-11-10 10:10:14,512 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:10:14,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 61 events. 8/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2024-11-10 10:10:14,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 66 transitions, 152 flow [2024-11-10 10:10:14,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 50 transitions, 113 flow [2024-11-10 10:10:14,516 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:10:14,518 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=LoopHeads, 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;@33280692, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:10:14,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:10:14,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:10:14,527 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2024-11-10 10:10:14,527 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:10:14,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:10:14,527 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:10:14,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:10:14,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:10:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2029165639, now seen corresponding path program 1 times [2024-11-10 10:10:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:10:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586378922] [2024-11-10 10:10:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:10:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:10:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:10:14,630 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 10:10:14,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:10:14,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586378922] [2024-11-10 10:10:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586378922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:10:14,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:10:14,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:10:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881465135] [2024-11-10 10:10:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:10:14,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:10:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:10:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:10:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:10:14,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-11-10 10:10:14,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 10:10:14,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:10:14,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-11-10 10:10:14,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:10:15,219 INFO L124 PetriNetUnfolderBase]: 2714/4079 cut-off events. [2024-11-10 10:10:15,219 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-11-10 10:10:15,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8102 conditions, 4079 events. 2714/4079 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 24935 event pairs, 2506 based on Foata normal form. 1593/5435 useless extension candidates. Maximal degree in co-relation 8091. Up to 3911 conditions per place. [2024-11-10 10:10:15,264 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 30 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-10 10:10:15,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 157 flow [2024-11-10 10:10:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:10:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:10:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-10 10:10:15,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-11-10 10:10:15,270 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 113 flow. Second operand 3 states and 93 transitions. [2024-11-10 10:10:15,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 157 flow [2024-11-10 10:10:15,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:10:15,272 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 96 flow [2024-11-10 10:10:15,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-10 10:10:15,275 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-10 10:10:15,275 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 96 flow [2024-11-10 10:10:15,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 10:10:15,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:10:15,276 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 10:10:15,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:10:15,277 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:10:15,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:10:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1992278458, now seen corresponding path program 1 times [2024-11-10 10:10:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:10:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622390214] [2024-11-10 10:10:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:10:15,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:10:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:10:15,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:10:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:10:15,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:10:15,332 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:10:15,332 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:10:15,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:10:15,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-10 10:10:15,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:10:15,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:10:15,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:10:15,334 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:10:15,335 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:10:15,336 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:10:15,378 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:10:15,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 224 flow [2024-11-10 10:10:15,396 INFO L124 PetriNetUnfolderBase]: 10/80 cut-off events. [2024-11-10 10:10:15,396 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 10:10:15,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 80 events. 10/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 91. Up to 8 conditions per place. [2024-11-10 10:10:15,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 94 transitions, 224 flow [2024-11-10 10:10:15,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 63 transitions, 147 flow [2024-11-10 10:10:15,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:10:15,401 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=LoopHeads, 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;@33280692, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:10:15,401 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 10:10:15,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:10:15,406 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-11-10 10:10:15,406 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:10:15,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:10:15,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:10:15,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 10:10:15,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:10:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1323233546, now seen corresponding path program 1 times [2024-11-10 10:10:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:10:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824846782] [2024-11-10 10:10:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:10:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:10:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:10:15,478 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 10:10:15,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:10:15,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824846782] [2024-11-10 10:10:15,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824846782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:10:15,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:10:15,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:10:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031203595] [2024-11-10 10:10:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:10:15,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:10:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:10:15,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:10:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:10:15,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 94 [2024-11-10 10:10:15,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:10:15,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:10:15,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 94 [2024-11-10 10:10:15,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:10:21,364 INFO L124 PetriNetUnfolderBase]: 43007/57824 cut-off events. [2024-11-10 10:10:21,364 INFO L125 PetriNetUnfolderBase]: For 2703/2703 co-relation queries the response was YES. [2024-11-10 10:10:21,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115572 conditions, 57824 events. 43007/57824 cut-off events. For 2703/2703 co-relation queries the response was YES. Maximal size of possible extension queue 2560. Compared 387933 event pairs, 39532 based on Foata normal form. 17566/71590 useless extension candidates. Maximal degree in co-relation 115560. Up to 56183 conditions per place. [2024-11-10 10:10:21,940 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 42 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-11-10 10:10:21,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 215 flow [2024-11-10 10:10:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:10:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:10:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-10 10:10:21,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-11-10 10:10:21,944 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 147 flow. Second operand 3 states and 129 transitions. [2024-11-10 10:10:21,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 215 flow [2024-11-10 10:10:21,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 212 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 10:10:21,954 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 128 flow [2024-11-10 10:10:21,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-10 10:10:21,956 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -5 predicate places. [2024-11-10 10:10:21,956 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 128 flow [2024-11-10 10:10:21,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:10:21,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:10:21,957 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:10:21,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:10:21,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 10:10:21,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:10:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1900421130, now seen corresponding path program 1 times [2024-11-10 10:10:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:10:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656613888] [2024-11-10 10:10:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:10:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:10:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:10:21,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:10:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:10:22,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:10:22,004 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:10:22,005 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-10 10:10:22,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-10 10:10:22,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-10 10:10:22,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-10 10:10:22,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-10 10:10:22,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-10 10:10:22,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:10:22,006 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:10:22,007 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:10:22,007 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:10:22,063 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:10:22,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 300 flow [2024-11-10 10:10:22,086 INFO L124 PetriNetUnfolderBase]: 12/99 cut-off events. [2024-11-10 10:10:22,087 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 10:10:22,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 99 events. 12/99 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 115. Up to 10 conditions per place. [2024-11-10 10:10:22,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 122 transitions, 300 flow [2024-11-10 10:10:22,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 76 transitions, 183 flow [2024-11-10 10:10:22,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:10:22,092 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=LoopHeads, 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;@33280692, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:10:22,094 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 10:10:22,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:10:22,098 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2024-11-10 10:10:22,098 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:10:22,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:10:22,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:10:22,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:10:22,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:10:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1730584349, now seen corresponding path program 1 times [2024-11-10 10:10:22,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:10:22,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790629966] [2024-11-10 10:10:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:10:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:10:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:10:22,152 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 10:10:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:10:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790629966] [2024-11-10 10:10:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790629966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:10:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:10:22,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:10:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297656185] [2024-11-10 10:10:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:10:22,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:10:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:10:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:10:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:10:22,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 122 [2024-11-10 10:10:22,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 10:10:22,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:10:22,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 122 [2024-11-10 10:10:22,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand