./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 06:57:04,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 06:57:04,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 06:57:04,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 06:57:04,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 06:57:04,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 06:57:04,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 06:57:04,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 06:57:04,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 06:57:04,249 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 06:57:04,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 06:57:04,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 06:57:04,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 06:57:04,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 06:57:04,252 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 06:57:04,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 06:57:04,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 06:57:04,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 06:57:04,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 06:57:04,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 06:57:04,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 06:57:04,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 06:57:04,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 06:57:04,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 06:57:04,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 06:57:04,256 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 06:57:04,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 06:57:04,256 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 06:57:04,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 06:57:04,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 06:57:04,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 06:57:04,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 06:57:04,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:57:04,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 06:57:04,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 06:57:04,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 06:57:04,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 06:57:04,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 06:57:04,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 06:57:04,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 06:57:04,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 06:57:04,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 06:57:04,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2024-10-13 06:57:04,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 06:57:04,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 06:57:04,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 06:57:04,550 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 06:57:04,550 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 06:57:04,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2024-10-13 06:57:05,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 06:57:06,011 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 06:57:06,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2024-10-13 06:57:06,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b28160c/aed3172ba7df406b88817978453b50ba/FLAGb941c616f [2024-10-13 06:57:06,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b28160c/aed3172ba7df406b88817978453b50ba [2024-10-13 06:57:06,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 06:57:06,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 06:57:06,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 06:57:06,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 06:57:06,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 06:57:06,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f46a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06, skipping insertion in model container [2024-10-13 06:57:06,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 06:57:06,250 WARN L248 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-wmm/rfi003_tso.i[944,957] [2024-10-13 06:57:06,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:57:06,419 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 06:57:06,433 WARN L248 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-wmm/rfi003_tso.i[944,957] [2024-10-13 06:57:06,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:57:06,517 INFO L204 MainTranslator]: Completed translation [2024-10-13 06:57:06,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06 WrapperNode [2024-10-13 06:57:06,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 06:57:06,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 06:57:06,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 06:57:06,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 06:57:06,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,575 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2024-10-13 06:57:06,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 06:57:06,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 06:57:06,576 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 06:57:06,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 06:57:06,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,592 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,613 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 06:57:06,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 06:57:06,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 06:57:06,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 06:57:06,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 06:57:06,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (1/1) ... [2024-10-13 06:57:06,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:57:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:57:06,674 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) [2024-10-13 06:57:06,676 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 [2024-10-13 06:57:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 06:57:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 06:57:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-13 06:57:06,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-13 06:57:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-13 06:57:06,722 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-13 06:57:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 06:57:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 06:57:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 06:57:06,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 06:57:06,723 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 06:57:06,840 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 06:57:06,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 06:57:07,117 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 06:57:07,117 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 06:57:07,299 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 06:57:07,300 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 06:57:07,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:07 BoogieIcfgContainer [2024-10-13 06:57:07,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 06:57:07,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 06:57:07,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 06:57:07,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 06:57:07,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:57:06" (1/3) ... [2024-10-13 06:57:07,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8310d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:57:07, skipping insertion in model container [2024-10-13 06:57:07,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:06" (2/3) ... [2024-10-13 06:57:07,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8310d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:57:07, skipping insertion in model container [2024-10-13 06:57:07,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:07" (3/3) ... [2024-10-13 06:57:07,309 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-10-13 06:57:07,321 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 06:57:07,321 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 06:57:07,322 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 06:57:07,359 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:57:07,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2024-10-13 06:57:07,422 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-10-13 06:57:07,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:57:07,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-10-13 06:57:07,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2024-10-13 06:57:07,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2024-10-13 06:57:07,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:57:07,444 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;@10868a67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:57:07,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 06:57:07,448 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:57:07,450 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 06:57:07,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:57:07,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:57:07,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:57:07,452 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 06:57:07,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:57:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1718409122, now seen corresponding path program 1 times [2024-10-13 06:57:07,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:57:07,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533160473] [2024-10-13 06:57:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:57:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:57:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:57:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:57:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:57:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533160473] [2024-10-13 06:57:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533160473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:57:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:57:07,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 06:57:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711069948] [2024-10-13 06:57:07,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:57:07,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 06:57:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:57:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 06:57:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 06:57:07,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-10-13 06:57:07,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-13 06:57:07,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:57:07,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-10-13 06:57:07,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:57:08,089 INFO L124 PetriNetUnfolderBase]: 249/482 cut-off events. [2024-10-13 06:57:08,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:57:08,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 482 events. 249/482 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2462 event pairs, 24 based on Foata normal form. 24/495 useless extension candidates. Maximal degree in co-relation 912. Up to 366 conditions per place. [2024-10-13 06:57:08,096 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 23 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2024-10-13 06:57:08,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 136 flow [2024-10-13 06:57:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 06:57:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 06:57:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-10-13 06:57:08,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-10-13 06:57:08,107 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 69 transitions. [2024-10-13 06:57:08,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 136 flow [2024-10-13 06:57:08,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 06:57:08,112 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2024-10-13 06:57:08,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-10-13 06:57:08,117 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-10-13 06:57:08,118 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2024-10-13 06:57:08,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-13 06:57:08,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:57:08,118 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:57:08,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 06:57:08,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 06:57:08,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:57:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1142458704, now seen corresponding path program 1 times [2024-10-13 06:57:08,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:57:08,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902132767] [2024-10-13 06:57:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:57:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:57:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:57:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:57:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:57:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902132767] [2024-10-13 06:57:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902132767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:57:08,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:57:08,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 06:57:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629741395] [2024-10-13 06:57:08,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:57:08,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 06:57:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:57:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 06:57:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 06:57:08,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-10-13 06:57:08,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-10-13 06:57:08,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:57:08,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-10-13 06:57:08,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:57:08,516 INFO L124 PetriNetUnfolderBase]: 268/553 cut-off events. [2024-10-13 06:57:08,517 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-10-13 06:57:08,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 553 events. 268/553 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2732 event pairs, 62 based on Foata normal form. 35/563 useless extension candidates. Maximal degree in co-relation 1068. Up to 241 conditions per place. [2024-10-13 06:57:08,521 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/50 dead transitions. [2024-10-13 06:57:08,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 198 flow [2024-10-13 06:57:08,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 06:57:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 06:57:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-13 06:57:08,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-13 06:57:08,524 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 4 states and 84 transitions. [2024-10-13 06:57:08,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 198 flow [2024-10-13 06:57:08,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 06:57:08,526 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 86 flow [2024-10-13 06:57:08,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-10-13 06:57:08,527 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-10-13 06:57:08,527 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 86 flow [2024-10-13 06:57:08,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-10-13 06:57:08,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:57:08,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:57:08,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 06:57:08,528 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 06:57:08,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:57:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1130605351, now seen corresponding path program 1 times [2024-10-13 06:57:08,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:57:08,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589634487] [2024-10-13 06:57:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:57:08,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:57:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:57:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:57:08,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:57:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589634487] [2024-10-13 06:57:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589634487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:57:08,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:57:08,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 06:57:08,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665564314] [2024-10-13 06:57:08,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:57:08,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 06:57:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:57:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 06:57:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 06:57:08,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-10-13 06:57:08,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2024-10-13 06:57:08,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:57:08,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-10-13 06:57:08,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:57:08,891 INFO L124 PetriNetUnfolderBase]: 134/276 cut-off events. [2024-10-13 06:57:08,891 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-13 06:57:08,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 276 events. 134/276 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1017 event pairs, 42 based on Foata normal form. 20/287 useless extension candidates. Maximal degree in co-relation 633. Up to 116 conditions per place. [2024-10-13 06:57:08,894 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 30 selfloop transitions, 6 changer transitions 1/45 dead transitions. [2024-10-13 06:57:08,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 195 flow [2024-10-13 06:57:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 06:57:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 06:57:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-10-13 06:57:08,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-10-13 06:57:08,897 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 86 flow. Second operand 5 states and 89 transitions. [2024-10-13 06:57:08,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 195 flow [2024-10-13 06:57:08,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 06:57:08,898 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 102 flow [2024-10-13 06:57:08,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-10-13 06:57:08,899 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-10-13 06:57:08,899 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 102 flow [2024-10-13 06:57:08,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2024-10-13 06:57:08,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:57:08,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:57:08,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 06:57:08,900 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 06:57:08,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:57:08,900 INFO L85 PathProgramCache]: Analyzing trace with hash -303791634, now seen corresponding path program 1 times [2024-10-13 06:57:08,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:57:08,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404207170] [2024-10-13 06:57:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:57:08,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:57:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:57:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:57:11,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:57:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404207170] [2024-10-13 06:57:11,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404207170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:57:11,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:57:11,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 06:57:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320770260] [2024-10-13 06:57:11,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:57:11,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 06:57:11,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:57:11,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 06:57:11,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-13 06:57:11,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-13 06:57:11,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-10-13 06:57:11,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:57:11,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-13 06:57:11,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:57:12,536 INFO L124 PetriNetUnfolderBase]: 148/344 cut-off events. [2024-10-13 06:57:12,536 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-13 06:57:12,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 344 events. 148/344 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1389 event pairs, 28 based on Foata normal form. 4/343 useless extension candidates. Maximal degree in co-relation 763. Up to 136 conditions per place. [2024-10-13 06:57:12,538 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 25 selfloop transitions, 15 changer transitions 16/67 dead transitions. [2024-10-13 06:57:12,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 296 flow [2024-10-13 06:57:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 06:57:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 06:57:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-10-13 06:57:12,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4903581267217631 [2024-10-13 06:57:12,539 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 102 flow. Second operand 11 states and 178 transitions. [2024-10-13 06:57:12,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 296 flow [2024-10-13 06:57:12,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 262 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-13 06:57:12,546 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 158 flow [2024-10-13 06:57:12,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-10-13 06:57:12,547 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-13 06:57:12,547 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 158 flow [2024-10-13 06:57:12,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-10-13 06:57:12,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:57:12,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:57:12,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 06:57:12,548 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 06:57:12,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:57:12,548 INFO L85 PathProgramCache]: Analyzing trace with hash 56928114, now seen corresponding path program 2 times [2024-10-13 06:57:12,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:57:12,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151931977] [2024-10-13 06:57:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:57:12,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:57:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:57:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:57:14,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:57:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151931977] [2024-10-13 06:57:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151931977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:57:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:57:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 06:57:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083878430] [2024-10-13 06:57:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:57:14,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 06:57:14,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:57:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 06:57:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-13 06:57:14,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-13 06:57:14,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 158 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2024-10-13 06:57:14,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:57:14,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-13 06:57:14,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:57:14,965 INFO L124 PetriNetUnfolderBase]: 182/434 cut-off events. [2024-10-13 06:57:14,965 INFO L125 PetriNetUnfolderBase]: For 134/138 co-relation queries the response was YES. [2024-10-13 06:57:14,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 434 events. 182/434 cut-off events. For 134/138 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1972 event pairs, 52 based on Foata normal form. 4/426 useless extension candidates. Maximal degree in co-relation 1072. Up to 132 conditions per place. [2024-10-13 06:57:14,968 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 19 selfloop transitions, 7 changer transitions 35/72 dead transitions. [2024-10-13 06:57:14,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 387 flow [2024-10-13 06:57:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 06:57:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 06:57:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-10-13 06:57:14,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 06:57:14,969 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 158 flow. Second operand 10 states and 165 transitions. [2024-10-13 06:57:14,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 387 flow [2024-10-13 06:57:14,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 380 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-13 06:57:14,972 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 137 flow [2024-10-13 06:57:14,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=137, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2024-10-13 06:57:14,972 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-10-13 06:57:14,972 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 137 flow [2024-10-13 06:57:14,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2024-10-13 06:57:14,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:57:14,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:57:14,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 06:57:14,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 06:57:14,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:57:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash -489657136, now seen corresponding path program 3 times [2024-10-13 06:57:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:57:14,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588704929] [2024-10-13 06:57:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:57:14,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:57:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:57:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:57:15,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:57:15,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588704929] [2024-10-13 06:57:15,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588704929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:57:15,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:57:15,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 06:57:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909203979] [2024-10-13 06:57:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:57:15,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 06:57:15,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:57:15,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 06:57:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 06:57:15,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-10-13 06:57:15,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-10-13 06:57:15,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:57:15,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-10-13 06:57:15,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:57:15,640 INFO L124 PetriNetUnfolderBase]: 60/145 cut-off events. [2024-10-13 06:57:15,641 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-13 06:57:15,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 145 events. 60/145 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 375 event pairs, 8 based on Foata normal form. 4/147 useless extension candidates. Maximal degree in co-relation 391. Up to 58 conditions per place. [2024-10-13 06:57:15,641 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-10-13 06:57:15,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 39 transitions, 215 flow [2024-10-13 06:57:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 06:57:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 06:57:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-10-13 06:57:15,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-10-13 06:57:15,643 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 137 flow. Second operand 8 states and 102 transitions. [2024-10-13 06:57:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 39 transitions, 215 flow [2024-10-13 06:57:15,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 172 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-10-13 06:57:15,644 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-10-13 06:57:15,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-10-13 06:57:15,645 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-10-13 06:57:15,645 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-10-13 06:57:15,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-10-13 06:57:15,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-10-13 06:57:15,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-10-13 06:57:15,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-10-13 06:57:15,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-10-13 06:57:15,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-10-13 06:57:15,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 06:57:15,649 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-13 06:57:15,652 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 06:57:15,652 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 06:57:15,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:57:15 BasicIcfg [2024-10-13 06:57:15,660 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 06:57:15,660 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 06:57:15,660 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 06:57:15,660 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 06:57:15,661 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:07" (3/4) ... [2024-10-13 06:57:15,662 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 06:57:15,664 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-13 06:57:15,664 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-13 06:57:15,667 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 75 nodes and edges [2024-10-13 06:57:15,667 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-13 06:57:15,667 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-13 06:57:15,668 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 06:57:15,742 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 06:57:15,742 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 06:57:15,742 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 06:57:15,743 INFO L158 Benchmark]: Toolchain (without parser) took 9700.41ms. Allocated memory was 172.0MB in the beginning and 589.3MB in the end (delta: 417.3MB). Free memory was 140.4MB in the beginning and 284.7MB in the end (delta: -144.3MB). Peak memory consumption was 273.3MB. Max. memory is 16.1GB. [2024-10-13 06:57:15,747 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 06:57:15,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.36ms. Allocated memory is still 172.0MB. Free memory was 140.4MB in the beginning and 112.3MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-13 06:57:15,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.56ms. Allocated memory is still 172.0MB. Free memory was 112.3MB in the beginning and 108.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 06:57:15,748 INFO L158 Benchmark]: Boogie Preprocessor took 65.62ms. Allocated memory is still 172.0MB. Free memory was 108.1MB in the beginning and 103.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 06:57:15,748 INFO L158 Benchmark]: RCFGBuilder took 658.38ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 74.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-13 06:57:15,748 INFO L158 Benchmark]: TraceAbstraction took 8356.47ms. Allocated memory was 172.0MB in the beginning and 589.3MB in the end (delta: 417.3MB). Free memory was 74.5MB in the beginning and 288.9MB in the end (delta: -214.4MB). Peak memory consumption was 205.9MB. Max. memory is 16.1GB. [2024-10-13 06:57:15,748 INFO L158 Benchmark]: Witness Printer took 82.36ms. Allocated memory is still 589.3MB. Free memory was 288.9MB in the beginning and 284.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 06:57:15,749 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.36ms. Allocated memory is still 172.0MB. Free memory was 140.4MB in the beginning and 112.3MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.56ms. Allocated memory is still 172.0MB. Free memory was 112.3MB in the beginning and 108.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.62ms. Allocated memory is still 172.0MB. Free memory was 108.1MB in the beginning and 103.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 658.38ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 74.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8356.47ms. Allocated memory was 172.0MB in the beginning and 589.3MB in the end (delta: 417.3MB). Free memory was 74.5MB in the beginning and 288.9MB in the end (delta: -214.4MB). Peak memory consumption was 205.9MB. Max. memory is 16.1GB. * Witness Printer took 82.36ms. Allocated memory is still 589.3MB. Free memory was 288.9MB in the beginning and 284.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 201 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 193 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 787 IncrementalHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 8 mSDtfsCounter, 787 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=4, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 1207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 06:57:15,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE