./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/14_spin2003.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/14_spin2003.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 83bca07672f78100877a79a1440d2a8107bad3ebb200d176bee629abfa2ef706 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:25:00,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:25:00,101 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:25:00,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:25:00,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:25:00,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:25:00,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:25:00,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:25:00,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:25:00,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:25:00,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:25:00,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:25:00,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:25:00,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:25:00,130 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:25:00,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:25:00,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:25:00,131 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:25:00,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:25:00,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:25:00,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:25:00,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:25:00,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:25:00,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:25:00,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:25:00,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:25:00,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:25:00,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:25:00,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:25:00,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:25:00,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:25:00,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:25:00,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:25:00,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:25:00,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:25:00,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:25:00,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:25:00,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:25:00,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:25:00,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:25:00,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:25:00,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:25:00,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83bca07672f78100877a79a1440d2a8107bad3ebb200d176bee629abfa2ef706 [2024-11-09 02:25:00,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:25:00,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:25:00,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:25:00,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:25:00,398 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:25:00,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/14_spin2003.i [2024-11-09 02:25:01,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:25:01,804 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:25:01,805 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/14_spin2003.i [2024-11-09 02:25:01,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90013ce7/2372a77cf60e4fb79ad42d4e09fa2af2/FLAG632c37ae4 [2024-11-09 02:25:01,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90013ce7/2372a77cf60e4fb79ad42d4e09fa2af2 [2024-11-09 02:25:01,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:25:01,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:25:01,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:25:01,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:25:01,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:25:01,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:25:01" (1/1) ... [2024-11-09 02:25:01,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@994e45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:01, skipping insertion in model container [2024-11-09 02:25:01,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:25:01" (1/1) ... [2024-11-09 02:25:01,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:25:02,110 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/14_spin2003.i[30419,30432] [2024-11-09 02:25:02,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:25:02,130 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:25:02,165 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/14_spin2003.i[30419,30432] [2024-11-09 02:25:02,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:25:02,209 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:25:02,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02 WrapperNode [2024-11-09 02:25:02,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:25:02,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:25:02,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:25:02,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:25:02,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,241 INFO L138 Inliner]: procedures = 161, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2024-11-09 02:25:02,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:25:02,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:25:02,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:25:02,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:25:02,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,261 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]. [2024-11-09 02:25:02,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:25:02,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:25:02,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:25:02,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:25:02,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (1/1) ... [2024-11-09 02:25:02,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:25:02,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:25:02,302 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) [2024-11-09 02:25:02,304 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 [2024-11-09 02:25:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 02:25:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 02:25:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:25:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:25:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:25:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:25:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:25:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:25:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:25:02,337 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:25:02,460 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:25:02,462 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:25:02,549 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:25:02,549 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:25:02,622 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:25:02,622 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 02:25:02,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:25:02 BoogieIcfgContainer [2024-11-09 02:25:02,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:25:02,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:25:02,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:25:02,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:25:02,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:25:01" (1/3) ... [2024-11-09 02:25:02,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6ca54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:25:02, skipping insertion in model container [2024-11-09 02:25:02,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:25:02" (2/3) ... [2024-11-09 02:25:02,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6ca54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:25:02, skipping insertion in model container [2024-11-09 02:25:02,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:25:02" (3/3) ... [2024-11-09 02:25:02,629 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2024-11-09 02:25:02,641 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:25:02,641 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:25:02,642 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:25:02,663 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:02,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 16 places, 14 transitions, 32 flow [2024-11-09 02:25:02,725 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-09 02:25:02,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:25:02,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 16 events. 1/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-09 02:25:02,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 14 transitions, 32 flow [2024-11-09 02:25:02,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 14 transitions, 32 flow [2024-11-09 02:25:02,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:02,746 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;@5bb5f2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:02,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:25:02,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:02,751 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-09 02:25:02,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:25:02,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:02,752 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-09 02:25:02,752 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:25:02,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash 126010588, now seen corresponding path program 1 times [2024-11-09 02:25:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693494428] [2024-11-09 02:25:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:02,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:25:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:02,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:25:02,888 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:25:02,889 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-09 02:25:02,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-09 02:25:02,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-09 02:25:02,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:25:02,891 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 02:25:02,893 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:25:02,894 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:25:02,903 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:02,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 58 flow [2024-11-09 02:25:02,911 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-11-09 02:25:02,911 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:25:02,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 28 events. 2/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 3 conditions per place. [2024-11-09 02:25:02,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 58 flow [2024-11-09 02:25:02,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 24 transitions, 58 flow [2024-11-09 02:25:02,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:02,916 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;@5bb5f2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:02,917 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:25:02,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:02,921 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-11-09 02:25:02,921 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:25:02,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:02,921 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-11-09 02:25:02,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:25:02,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:02,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1380671164, now seen corresponding path program 1 times [2024-11-09 02:25:02,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552681806] [2024-11-09 02:25:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:02,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:02,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:25:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:02,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:25:02,962 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:25:02,962 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 02:25:02,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-09 02:25:02,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-09 02:25:02,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-09 02:25:02,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:25:02,963 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 02:25:02,963 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:25:02,963 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 02:25:02,980 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:02,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 86 flow [2024-11-09 02:25:02,996 INFO L124 PetriNetUnfolderBase]: 3/40 cut-off events. [2024-11-09 02:25:02,996 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:25:02,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 3/40 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 4 conditions per place. [2024-11-09 02:25:02,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 34 transitions, 86 flow [2024-11-09 02:25:02,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 86 flow [2024-11-09 02:25:03,001 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:03,002 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;@5bb5f2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:03,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:25:03,013 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:03,013 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-09 02:25:03,013 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:25:03,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:03,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:03,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:25:03,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash 360869586, now seen corresponding path program 1 times [2024-11-09 02:25:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:03,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417857031] [2024-11-09 02:25:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:25:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:25:03,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:25:03,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417857031] [2024-11-09 02:25:03,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417857031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:25:03,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:25:03,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:25:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077446284] [2024-11-09 02:25:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:25:03,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:25:03,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:25:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:25:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:25:03,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 02:25:03,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-09 02:25:03,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:25:03,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 02:25:03,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:25:03,385 INFO L124 PetriNetUnfolderBase]: 564/973 cut-off events. [2024-11-09 02:25:03,385 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-11-09 02:25:03,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 973 events. 564/973 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4936 event pairs, 564 based on Foata normal form. 172/1132 useless extension candidates. Maximal degree in co-relation 425. Up to 876 conditions per place. [2024-11-09 02:25:03,398 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 16 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2024-11-09 02:25:03,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 100 flow [2024-11-09 02:25:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:25:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:25:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-09 02:25:03,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:25:03,416 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 86 flow. Second operand 3 states and 51 transitions. [2024-11-09 02:25:03,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 100 flow [2024-11-09 02:25:03,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 98 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:25:03,422 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 66 flow [2024-11-09 02:25:03,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-11-09 02:25:03,429 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-11-09 02:25:03,430 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 66 flow [2024-11-09 02:25:03,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-09 02:25:03,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:03,430 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2024-11-09 02:25:03,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:25:03,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:25:03,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1995688775, now seen corresponding path program 1 times [2024-11-09 02:25:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:03,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605688696] [2024-11-09 02:25:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:03,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:03,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:25:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:03,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:25:03,488 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:25:03,489 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 02:25:03,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:25:03,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 02:25:03,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 02:25:03,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:25:03,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:25:03,494 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 02:25:03,495 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:25:03,495 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 02:25:03,512 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:03,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 44 transitions, 116 flow [2024-11-09 02:25:03,522 INFO L124 PetriNetUnfolderBase]: 4/52 cut-off events. [2024-11-09 02:25:03,522 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 02:25:03,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 52 events. 4/52 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 132 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 51. Up to 5 conditions per place. [2024-11-09 02:25:03,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 44 transitions, 116 flow [2024-11-09 02:25:03,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 44 transitions, 116 flow [2024-11-09 02:25:03,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:03,528 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;@5bb5f2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:03,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:25:03,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:03,533 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-09 02:25:03,533 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 02:25:03,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:03,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:03,534 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 02:25:03,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1698492466, now seen corresponding path program 1 times [2024-11-09 02:25:03,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:03,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436250735] [2024-11-09 02:25:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:25:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:25:03,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:25:03,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436250735] [2024-11-09 02:25:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436250735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:25:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:25:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:25:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095090767] [2024-11-09 02:25:03,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:25:03,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:25:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:25:03,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:25:03,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:25:03,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-09 02:25:03,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-09 02:25:03,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:25:03,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-09 02:25:03,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:25:04,100 INFO L124 PetriNetUnfolderBase]: 4064/6083 cut-off events. [2024-11-09 02:25:04,100 INFO L125 PetriNetUnfolderBase]: For 1719/1719 co-relation queries the response was YES. [2024-11-09 02:25:04,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12457 conditions, 6083 events. 4064/6083 cut-off events. For 1719/1719 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35232 event pairs, 4064 based on Foata normal form. 1172/7194 useless extension candidates. Maximal degree in co-relation 1995. Up to 5626 conditions per place. [2024-11-09 02:25:04,141 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2024-11-09 02:25:04,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 134 flow [2024-11-09 02:25:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:25:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:25:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-09 02:25:04,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:25:04,144 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 116 flow. Second operand 3 states and 66 transitions. [2024-11-09 02:25:04,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 134 flow [2024-11-09 02:25:04,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 128 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 02:25:04,148 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 86 flow [2024-11-09 02:25:04,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-11-09 02:25:04,150 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2024-11-09 02:25:04,150 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 86 flow [2024-11-09 02:25:04,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-09 02:25:04,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:04,150 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:04,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:25:04,151 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 02:25:04,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:04,151 INFO L85 PathProgramCache]: Analyzing trace with hash -648145901, now seen corresponding path program 1 times [2024-11-09 02:25:04,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:04,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456529404] [2024-11-09 02:25:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:04,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:25:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:04,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:25:04,188 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:25:04,188 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 02:25:04,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-09 02:25:04,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-09 02:25:04,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-09 02:25:04,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-09 02:25:04,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-09 02:25:04,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:25:04,189 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 02:25:04,190 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:25:04,190 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 02:25:04,243 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:04,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 54 transitions, 148 flow [2024-11-09 02:25:04,252 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2024-11-09 02:25:04,253 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 02:25:04,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 64 events. 5/64 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 183 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2024-11-09 02:25:04,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 54 transitions, 148 flow [2024-11-09 02:25:04,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 54 transitions, 148 flow [2024-11-09 02:25:04,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:04,258 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;@5bb5f2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:04,258 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:25:04,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:04,261 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-09 02:25:04,261 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:25:04,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:04,262 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:04,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:25:04,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:04,264 INFO L85 PathProgramCache]: Analyzing trace with hash -446858496, now seen corresponding path program 1 times [2024-11-09 02:25:04,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057397516] [2024-11-09 02:25:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:25:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:25:04,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:25:04,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057397516] [2024-11-09 02:25:04,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057397516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:25:04,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:25:04,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:25:04,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36478852] [2024-11-09 02:25:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:25:04,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:25:04,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:25:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:25:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:25:04,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-09 02:25:04,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-09 02:25:04,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:25:04,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-09 02:25:04,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:25:06,940 INFO L124 PetriNetUnfolderBase]: 26564/36649 cut-off events. [2024-11-09 02:25:06,940 INFO L125 PetriNetUnfolderBase]: For 13590/13590 co-relation queries the response was YES. [2024-11-09 02:25:06,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75524 conditions, 36649 events. 26564/36649 cut-off events. For 13590/13590 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 230359 event pairs, 26564 based on Foata normal form. 7422/43770 useless extension candidates. Maximal degree in co-relation 12605. Up to 34376 conditions per place. [2024-11-09 02:25:07,165 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 26 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2024-11-09 02:25:07,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 170 flow [2024-11-09 02:25:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:25:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:25:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-09 02:25:07,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:25:07,168 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 148 flow. Second operand 3 states and 81 transitions. [2024-11-09 02:25:07,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 170 flow [2024-11-09 02:25:07,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 38 transitions, 158 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-09 02:25:07,181 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 106 flow [2024-11-09 02:25:07,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-11-09 02:25:07,182 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places. [2024-11-09 02:25:07,182 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 106 flow [2024-11-09 02:25:07,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-09 02:25:07,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:07,183 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:07,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:25:07,184 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:25:07,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -540935670, now seen corresponding path program 1 times [2024-11-09 02:25:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313773484] [2024-11-09 02:25:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:07,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:25:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:07,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:25:07,220 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:25:07,220 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-09 02:25:07,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-11-09 02:25:07,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-11-09 02:25:07,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-11-09 02:25:07,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-11-09 02:25:07,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-11-09 02:25:07,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-09 02:25:07,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:25:07,222 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 02:25:07,223 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:25:07,223 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-09 02:25:07,246 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:07,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 64 transitions, 182 flow [2024-11-09 02:25:07,256 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2024-11-09 02:25:07,257 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-09 02:25:07,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 76 events. 6/76 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 220 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2024-11-09 02:25:07,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 64 transitions, 182 flow [2024-11-09 02:25:07,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 64 transitions, 182 flow [2024-11-09 02:25:07,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:07,260 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;@5bb5f2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:07,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 02:25:07,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:07,263 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-09 02:25:07,263 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:25:07,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:07,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:07,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-09 02:25:07,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:07,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1754449769, now seen corresponding path program 1 times [2024-11-09 02:25:07,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:07,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451880493] [2024-11-09 02:25:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:07,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:25:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:25:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:25:07,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451880493] [2024-11-09 02:25:07,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451880493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:25:07,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:25:07,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:25:07,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063599548] [2024-11-09 02:25:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:25:07,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:25:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:25:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:25:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:25:07,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-11-09 02:25:07,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-09 02:25:07,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:25:07,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-11-09 02:25:07,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:25:19,721 INFO L124 PetriNetUnfolderBase]: 164064/214479 cut-off events. [2024-11-09 02:25:19,721 INFO L125 PetriNetUnfolderBase]: For 98095/98095 co-relation queries the response was YES. [2024-11-09 02:25:20,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443980 conditions, 214479 events. 164064/214479 cut-off events. For 98095/98095 co-relation queries the response was YES. Maximal size of possible extension queue 6190. Compared 1414633 event pairs, 164064 based on Foata normal form. 44922/257900 useless extension candidates. Maximal degree in co-relation 76296. Up to 203126 conditions per place. [2024-11-09 02:25:21,226 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 31 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2024-11-09 02:25:21,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 208 flow [2024-11-09 02:25:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:25:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:25:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-09 02:25:21,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:25:21,228 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 182 flow. Second operand 3 states and 96 transitions. [2024-11-09 02:25:21,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 208 flow [2024-11-09 02:25:21,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 188 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-09 02:25:21,271 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 126 flow [2024-11-09 02:25:21,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2024-11-09 02:25:21,272 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2024-11-09 02:25:21,273 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 126 flow [2024-11-09 02:25:21,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-09 02:25:21,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:21,274 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:21,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:25:21,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-09 02:25:21,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash 597758942, now seen corresponding path program 1 times [2024-11-09 02:25:21,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328449399] [2024-11-09 02:25:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:21,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:25:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:25:21,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:25:21,380 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2024-11-09 02:25:21,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2024-11-09 02:25:21,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:25:21,381 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 02:25:21,383 WARN L244 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:25:21,384 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-09 02:25:21,409 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:25:21,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 218 flow [2024-11-09 02:25:21,416 INFO L124 PetriNetUnfolderBase]: 7/88 cut-off events. [2024-11-09 02:25:21,416 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 02:25:21,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 88 events. 7/88 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 264 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2024-11-09 02:25:21,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 218 flow [2024-11-09 02:25:21,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 74 transitions, 218 flow [2024-11-09 02:25:21,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:25:21,419 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;@5bb5f2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:25:21,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-09 02:25:21,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:25:21,422 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-09 02:25:21,423 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:25:21,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:25:21,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:25:21,423 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-09 02:25:21,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:25:21,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2087863433, now seen corresponding path program 1 times [2024-11-09 02:25:21,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:25:21,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194804238] [2024-11-09 02:25:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:25:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:25:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:25:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:25:21,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:25:21,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194804238] [2024-11-09 02:25:21,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194804238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:25:21,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:25:21,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:25:21,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219719820] [2024-11-09 02:25:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:25:21,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:25:21,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:25:21,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:25:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:25:21,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 74 [2024-11-09 02:25:21,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-09 02:25:21,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:25:21,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 74 [2024-11-09 02:25:21,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand