./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-figure3.wvr.c -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 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:49:28,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:49:28,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:49:28,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:49:28,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:49:28,301 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:49:28,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:49:28,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:49:28,303 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:49:28,304 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:49:28,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:49:28,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:49:28,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:49:28,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:49:28,308 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:49:28,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:49:28,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:49:28,309 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:49:28,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:49:28,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:49:28,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:49:28,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:49:28,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:49:28,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:49:28,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:49:28,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:49:28,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:49:28,315 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:49:28,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:49:28,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:49:28,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:49:28,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:49:28,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:49:28,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:49:28,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:49:28,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:49:28,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:49:28,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:49:28,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:49:28,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:49:28,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:49:28,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:49:28,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 [2024-11-22 13:49:28,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:49:28,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:49:28,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:49:28,623 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:49:28,624 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:49:28,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-22 13:49:30,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:49:30,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:49:30,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-22 13:49:30,340 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a472d5ec/b38ec2cf459343d391784a0ec0b9338b/FLAGf9355fe2a [2024-11-22 13:49:30,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a472d5ec/b38ec2cf459343d391784a0ec0b9338b [2024-11-22 13:49:30,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:49:30,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:49:30,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:49:30,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:49:30,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:49:30,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c297b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30, skipping insertion in model container [2024-11-22 13:49:30,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:49:30,570 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/weaver/popl20-figure3.wvr.c[1946,1959] [2024-11-22 13:49:30,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:49:30,582 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:49:30,599 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/weaver/popl20-figure3.wvr.c[1946,1959] [2024-11-22 13:49:30,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:49:30,619 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:49:30,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30 WrapperNode [2024-11-22 13:49:30,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:49:30,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:49:30,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:49:30,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:49:30,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,656 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2024-11-22 13:49:30,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:49:30,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:49:30,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:49:30,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:49:30,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,690 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]. [2024-11-22 13:49:30,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:49:30,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:49:30,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:49:30,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:49:30,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2024-11-22 13:49:30,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:49:30,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:30,751 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) [2024-11-22 13:49:30,753 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 [2024-11-22 13:49:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:49:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:49:30,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:49:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:49:30,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:49:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:49:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:49:30,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:49:30,801 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:49:30,873 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:49:30,876 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:49:31,090 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:49:31,090 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:49:31,242 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:49:31,245 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 13:49:31,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:31 BoogieIcfgContainer [2024-11-22 13:49:31,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:49:31,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:49:31,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:49:31,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:49:31,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:49:30" (1/3) ... [2024-11-22 13:49:31,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12484ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:31, skipping insertion in model container [2024-11-22 13:49:31,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (2/3) ... [2024-11-22 13:49:31,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12484ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:31, skipping insertion in model container [2024-11-22 13:49:31,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:31" (3/3) ... [2024-11-22 13:49:31,257 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2024-11-22 13:49:31,270 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:49:31,271 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:49:31,271 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:49:31,319 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:49:31,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-22 13:49:31,383 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-22 13:49:31,383 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:49:31,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-22 13:49:31,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-22 13:49:31,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-22 13:49:31,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:49:31,409 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;@3d2017ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:49:31,410 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:49:31,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:49:31,419 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-22 13:49:31,419 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:49:31,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:31,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:31,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:31,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1255077345, now seen corresponding path program 1 times [2024-11-22 13:49:31,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319584816] [2024-11-22 13:49:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:31,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:31,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:31,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319584816] [2024-11-22 13:49:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319584816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:31,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:31,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:49:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154005469] [2024-11-22 13:49:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:31,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:49:31,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:31,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:49:31,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:49:31,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-22 13:49:31,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-22 13:49:31,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:31,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-22 13:49:31,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:32,047 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-22 13:49:32,047 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-22 13:49:32,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 169 events. 86/169 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 499 event pairs, 32 based on Foata normal form. 1/162 useless extension candidates. Maximal degree in co-relation 298. Up to 108 conditions per place. [2024-11-22 13:49:32,053 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-22 13:49:32,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-22 13:49:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:49:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:49:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-22 13:49:32,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-22 13:49:32,068 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 3 states and 40 transitions. [2024-11-22 13:49:32,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-22 13:49:32,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:32,074 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-22 13:49:32,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-22 13:49:32,081 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2024-11-22 13:49:32,082 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-22 13:49:32,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-22 13:49:32,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:32,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:32,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:49:32,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:32,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash 930887173, now seen corresponding path program 1 times [2024-11-22 13:49:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159915089] [2024-11-22 13:49:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:32,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:32,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159915089] [2024-11-22 13:49:32,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159915089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:32,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:32,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:49:32,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017175088] [2024-11-22 13:49:32,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:32,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:32,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:49:32,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:32,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-22 13:49:32,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:32,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:32,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:32,510 INFO L124 PetriNetUnfolderBase]: 98/200 cut-off events. [2024-11-22 13:49:32,510 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-22 13:49:32,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 200 events. 98/200 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 744 event pairs, 45 based on Foata normal form. 2/184 useless extension candidates. Maximal degree in co-relation 155. Up to 133 conditions per place. [2024-11-22 13:49:32,513 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 28 selfloop transitions, 6 changer transitions 1/39 dead transitions. [2024-11-22 13:49:32,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 170 flow [2024-11-22 13:49:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:49:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:49:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-11-22 13:49:32,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2024-11-22 13:49:32,515 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 61 transitions. [2024-11-22 13:49:32,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 170 flow [2024-11-22 13:49:32,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:32,517 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 97 flow [2024-11-22 13:49:32,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-22 13:49:32,520 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2024-11-22 13:49:32,520 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 97 flow [2024-11-22 13:49:32,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-22 13:49:32,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:32,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:32,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:49:32,521 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:32,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1774096965, now seen corresponding path program 2 times [2024-11-22 13:49:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805329695] [2024-11-22 13:49:32,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:32,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:32,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:32,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805329695] [2024-11-22 13:49:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805329695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341106909] [2024-11-22 13:49:32,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:32,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:32,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:32,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:49:32,911 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:32,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:32,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:32,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:32,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:49:32,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341106909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:32,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:49:32,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-22 13:49:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65088130] [2024-11-22 13:49:32,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:32,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:49:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:32,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:49:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:49:32,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:32,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-22 13:49:32,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:32,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:32,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:33,156 INFO L124 PetriNetUnfolderBase]: 109/222 cut-off events. [2024-11-22 13:49:33,156 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-11-22 13:49:33,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 222 events. 109/222 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 836 event pairs, 4 based on Foata normal form. 7/213 useless extension candidates. Maximal degree in co-relation 406. Up to 94 conditions per place. [2024-11-22 13:49:33,160 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 38 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2024-11-22 13:49:33,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 269 flow [2024-11-22 13:49:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:49:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:49:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-22 13:49:33,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-11-22 13:49:33,164 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 97 flow. Second operand 7 states and 82 transitions. [2024-11-22 13:49:33,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 269 flow [2024-11-22 13:49:33,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 267 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-22 13:49:33,169 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 131 flow [2024-11-22 13:49:33,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-22 13:49:33,170 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2024-11-22 13:49:33,170 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 131 flow [2024-11-22 13:49:33,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-22 13:49:33,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:33,170 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:33,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:49:33,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:33,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:33,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1332688077, now seen corresponding path program 3 times [2024-11-22 13:49:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:33,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605395283] [2024-11-22 13:49:33,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:33,397 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:49:33,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605395283] [2024-11-22 13:49:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605395283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:49:33,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168893338] [2024-11-22 13:49:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:33,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:49:33,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:49:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:49:33,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:33,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-22 13:49:33,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:33,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:33,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:33,571 INFO L124 PetriNetUnfolderBase]: 149/302 cut-off events. [2024-11-22 13:49:33,572 INFO L125 PetriNetUnfolderBase]: For 449/451 co-relation queries the response was YES. [2024-11-22 13:49:33,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 302 events. 149/302 cut-off events. For 449/451 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1173 event pairs, 55 based on Foata normal form. 4/283 useless extension candidates. Maximal degree in co-relation 479. Up to 137 conditions per place. [2024-11-22 13:49:33,578 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 34 selfloop transitions, 7 changer transitions 1/46 dead transitions. [2024-11-22 13:49:33,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 304 flow [2024-11-22 13:49:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:49:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:49:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-11-22 13:49:33,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-11-22 13:49:33,580 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 131 flow. Second operand 4 states and 53 transitions. [2024-11-22 13:49:33,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 304 flow [2024-11-22 13:49:33,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 282 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:33,585 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 159 flow [2024-11-22 13:49:33,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2024-11-22 13:49:33,586 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2024-11-22 13:49:33,586 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 159 flow [2024-11-22 13:49:33,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-22 13:49:33,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:33,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:33,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:49:33,587 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:33,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2131557781, now seen corresponding path program 4 times [2024-11-22 13:49:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:33,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885031226] [2024-11-22 13:49:33,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:33,598 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:33,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885031226] [2024-11-22 13:49:33,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885031226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365335064] [2024-11-22 13:49:33,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:33,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:33,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:33,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:33,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:49:33,763 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:33,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:33,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:49:33,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:33,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365335064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:33,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:33,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 9 [2024-11-22 13:49:33,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77723476] [2024-11-22 13:49:33,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:33,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:49:33,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:33,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:49:33,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:49:33,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:33,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 159 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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) [2024-11-22 13:49:33,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:33,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:33,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:34,210 INFO L124 PetriNetUnfolderBase]: 279/548 cut-off events. [2024-11-22 13:49:34,211 INFO L125 PetriNetUnfolderBase]: For 1063/1063 co-relation queries the response was YES. [2024-11-22 13:49:34,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 548 events. 279/548 cut-off events. For 1063/1063 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2593 event pairs, 33 based on Foata normal form. 13/559 useless extension candidates. Maximal degree in co-relation 954. Up to 175 conditions per place. [2024-11-22 13:49:34,216 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 48 selfloop transitions, 41 changer transitions 2/95 dead transitions. [2024-11-22 13:49:34,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 95 transitions, 675 flow [2024-11-22 13:49:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:49:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:49:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-11-22 13:49:34,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-11-22 13:49:34,218 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 159 flow. Second operand 13 states and 148 transitions. [2024-11-22 13:49:34,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 95 transitions, 675 flow [2024-11-22 13:49:34,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 95 transitions, 644 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:34,223 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 518 flow [2024-11-22 13:49:34,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=518, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-11-22 13:49:34,224 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2024-11-22 13:49:34,224 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 518 flow [2024-11-22 13:49:34,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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) [2024-11-22 13:49:34,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:34,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:34,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:34,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:34,425 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:34,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash 69908399, now seen corresponding path program 5 times [2024-11-22 13:49:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:34,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854963787] [2024-11-22 13:49:34,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:34,442 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:34,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:34,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:34,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854963787] [2024-11-22 13:49:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854963787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:49:34,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:49:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:49:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249475130] [2024-11-22 13:49:34,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:49:34,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:49:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:49:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:49:34,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:34,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-22 13:49:34,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:34,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:34,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:34,619 INFO L124 PetriNetUnfolderBase]: 270/526 cut-off events. [2024-11-22 13:49:34,619 INFO L125 PetriNetUnfolderBase]: For 2814/2818 co-relation queries the response was YES. [2024-11-22 13:49:34,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 526 events. 270/526 cut-off events. For 2814/2818 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2402 event pairs, 65 based on Foata normal form. 9/532 useless extension candidates. Maximal degree in co-relation 1878. Up to 227 conditions per place. [2024-11-22 13:49:34,625 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 52 selfloop transitions, 24 changer transitions 1/81 dead transitions. [2024-11-22 13:49:34,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 783 flow [2024-11-22 13:49:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:49:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:49:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-11-22 13:49:34,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-22 13:49:34,627 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 518 flow. Second operand 4 states and 52 transitions. [2024-11-22 13:49:34,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 783 flow [2024-11-22 13:49:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 718 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-11-22 13:49:34,636 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 535 flow [2024-11-22 13:49:34,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=535, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2024-11-22 13:49:34,637 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2024-11-22 13:49:34,637 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 535 flow [2024-11-22 13:49:34,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-11-22 13:49:34,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:34,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:34,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:49:34,638 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:34,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash 190174668, now seen corresponding path program 1 times [2024-11-22 13:49:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:34,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446454706] [2024-11-22 13:49:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446454706] [2024-11-22 13:49:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446454706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156852247] [2024-11-22 13:49:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:49:34,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:34,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:34,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:49:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:34,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:49:34,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:34,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:49:34,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156852247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:34,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:34,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-22 13:49:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266375673] [2024-11-22 13:49:34,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:34,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:49:34,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:49:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:49:34,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-22 13:49:34,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 535 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2024-11-22 13:49:34,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:34,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-22 13:49:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:35,087 INFO L124 PetriNetUnfolderBase]: 564/1031 cut-off events. [2024-11-22 13:49:35,087 INFO L125 PetriNetUnfolderBase]: For 3996/4021 co-relation queries the response was YES. [2024-11-22 13:49:35,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 1031 events. 564/1031 cut-off events. For 3996/4021 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5053 event pairs, 90 based on Foata normal form. 12/1042 useless extension candidates. Maximal degree in co-relation 3413. Up to 487 conditions per place. [2024-11-22 13:49:35,098 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 97 selfloop transitions, 5 changer transitions 16/126 dead transitions. [2024-11-22 13:49:35,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 1231 flow [2024-11-22 13:49:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:49:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:49:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-22 13:49:35,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-22 13:49:35,100 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 535 flow. Second operand 4 states and 60 transitions. [2024-11-22 13:49:35,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 1231 flow [2024-11-22 13:49:35,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 126 transitions, 1129 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-22 13:49:35,110 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 498 flow [2024-11-22 13:49:35,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2024-11-22 13:49:35,112 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 34 predicate places. [2024-11-22 13:49:35,112 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 498 flow [2024-11-22 13:49:35,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2024-11-22 13:49:35,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:35,112 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:35,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:49:35,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:35,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:35,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1980436368, now seen corresponding path program 2 times [2024-11-22 13:49:35,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:35,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860234853] [2024-11-22 13:49:35,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:35,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:35,334 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:35,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:35,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860234853] [2024-11-22 13:49:35,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860234853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652488170] [2024-11-22 13:49:35,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:35,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:35,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:35,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:35,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:49:35,558 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:35,558 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:35,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:35,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:35,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:35,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652488170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:35,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:35,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-22 13:49:35,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639800692] [2024-11-22 13:49:35,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:35,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:49:35,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:49:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:49:35,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:35,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 498 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 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) [2024-11-22 13:49:35,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:35,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:35,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:36,529 INFO L124 PetriNetUnfolderBase]: 861/1572 cut-off events. [2024-11-22 13:49:36,529 INFO L125 PetriNetUnfolderBase]: For 6065/6107 co-relation queries the response was YES. [2024-11-22 13:49:36,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 1572 events. 861/1572 cut-off events. For 6065/6107 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8201 event pairs, 65 based on Foata normal form. 56/1618 useless extension candidates. Maximal degree in co-relation 3453. Up to 386 conditions per place. [2024-11-22 13:49:36,545 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 82 selfloop transitions, 101 changer transitions 4/194 dead transitions. [2024-11-22 13:49:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 194 transitions, 1732 flow [2024-11-22 13:49:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 13:49:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-22 13:49:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 240 transitions. [2024-11-22 13:49:36,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49586776859504134 [2024-11-22 13:49:36,548 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 498 flow. Second operand 22 states and 240 transitions. [2024-11-22 13:49:36,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 194 transitions, 1732 flow [2024-11-22 13:49:36,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 194 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:49:36,561 INFO L231 Difference]: Finished difference. Result has 88 places, 136 transitions, 1308 flow [2024-11-22 13:49:36,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1308, PETRI_PLACES=88, PETRI_TRANSITIONS=136} [2024-11-22 13:49:36,563 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 64 predicate places. [2024-11-22 13:49:36,564 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 136 transitions, 1308 flow [2024-11-22 13:49:36,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 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) [2024-11-22 13:49:36,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:36,565 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:36,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:36,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:36,766 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:36,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1344410538, now seen corresponding path program 3 times [2024-11-22 13:49:36,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:36,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622424473] [2024-11-22 13:49:36,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:36,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 13:49:36,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:36,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:36,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622424473] [2024-11-22 13:49:36,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622424473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:36,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128184249] [2024-11-22 13:49:36,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:36,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:36,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:36,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:36,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:49:37,027 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 13:49:37,027 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:37,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:37,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:37,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:37,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128184249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:37,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:37,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2024-11-22 13:49:37,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905427664] [2024-11-22 13:49:37,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:37,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 13:49:37,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 13:49:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-22 13:49:37,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:37,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 136 transitions, 1308 flow. Second operand has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 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) [2024-11-22 13:49:37,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:37,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:37,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:37,933 INFO L124 PetriNetUnfolderBase]: 913/1674 cut-off events. [2024-11-22 13:49:37,933 INFO L125 PetriNetUnfolderBase]: For 14504/14536 co-relation queries the response was YES. [2024-11-22 13:49:37,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1674 events. 913/1674 cut-off events. For 14504/14536 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9062 event pairs, 130 based on Foata normal form. 36/1704 useless extension candidates. Maximal degree in co-relation 5077. Up to 725 conditions per place. [2024-11-22 13:49:37,950 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 120 selfloop transitions, 84 changer transitions 11/222 dead transitions. [2024-11-22 13:49:37,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 222 transitions, 2442 flow [2024-11-22 13:49:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:49:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 13:49:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 196 transitions. [2024-11-22 13:49:37,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-11-22 13:49:37,952 INFO L175 Difference]: Start difference. First operand has 88 places, 136 transitions, 1308 flow. Second operand 20 states and 196 transitions. [2024-11-22 13:49:37,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 222 transitions, 2442 flow [2024-11-22 13:49:37,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 222 transitions, 2303 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-11-22 13:49:37,984 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 1780 flow [2024-11-22 13:49:37,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1780, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2024-11-22 13:49:37,985 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 88 predicate places. [2024-11-22 13:49:37,985 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 1780 flow [2024-11-22 13:49:37,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 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) [2024-11-22 13:49:37,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:37,986 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:37,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:49:38,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:38,191 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:38,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash -650354182, now seen corresponding path program 4 times [2024-11-22 13:49:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:38,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264399751] [2024-11-22 13:49:38,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:38,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:38,205 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:38,205 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:38,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264399751] [2024-11-22 13:49:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264399751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198308711] [2024-11-22 13:49:38,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:38,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:38,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:38,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:49:38,505 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:38,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:38,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:38,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:38,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:38,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198308711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:38,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:38,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2024-11-22 13:49:38,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937280469] [2024-11-22 13:49:38,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:38,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:49:38,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:38,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:49:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:49:38,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:38,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 1780 flow. Second operand has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 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) [2024-11-22 13:49:38,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:38,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:38,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:39,887 INFO L124 PetriNetUnfolderBase]: 1250/2255 cut-off events. [2024-11-22 13:49:39,888 INFO L125 PetriNetUnfolderBase]: For 17533/17561 co-relation queries the response was YES. [2024-11-22 13:49:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12120 conditions, 2255 events. 1250/2255 cut-off events. For 17533/17561 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12815 event pairs, 29 based on Foata normal form. 56/2291 useless extension candidates. Maximal degree in co-relation 12004. Up to 551 conditions per place. [2024-11-22 13:49:39,913 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 111 selfloop transitions, 222 changer transitions 0/340 dead transitions. [2024-11-22 13:49:39,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 340 transitions, 4088 flow [2024-11-22 13:49:39,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 13:49:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-22 13:49:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 269 transitions. [2024-11-22 13:49:39,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47027972027972026 [2024-11-22 13:49:39,916 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 1780 flow. Second operand 26 states and 269 transitions. [2024-11-22 13:49:39,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 340 transitions, 4088 flow [2024-11-22 13:49:39,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 340 transitions, 3889 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-11-22 13:49:39,961 INFO L231 Difference]: Finished difference. Result has 142 places, 271 transitions, 3593 flow [2024-11-22 13:49:39,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3593, PETRI_PLACES=142, PETRI_TRANSITIONS=271} [2024-11-22 13:49:39,963 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 118 predicate places. [2024-11-22 13:49:39,963 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 271 transitions, 3593 flow [2024-11-22 13:49:39,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 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) [2024-11-22 13:49:39,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:39,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:39,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:40,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:40,168 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:40,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1066290816, now seen corresponding path program 5 times [2024-11-22 13:49:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:40,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027387900] [2024-11-22 13:49:40,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:40,180 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:40,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:40,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027387900] [2024-11-22 13:49:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027387900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333827069] [2024-11-22 13:49:40,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:49:40,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:40,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:40,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:49:40,332 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:40,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:40,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 13:49:40,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:40,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:40,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333827069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:40,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:40,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-22 13:49:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478111759] [2024-11-22 13:49:40,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:40,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:49:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:49:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:49:40,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:40,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 271 transitions, 3593 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-11-22 13:49:40,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:40,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:40,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:41,777 INFO L124 PetriNetUnfolderBase]: 1614/2958 cut-off events. [2024-11-22 13:49:41,777 INFO L125 PetriNetUnfolderBase]: For 30890/30914 co-relation queries the response was YES. [2024-11-22 13:49:41,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18541 conditions, 2958 events. 1614/2958 cut-off events. For 30890/30914 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17576 event pairs, 52 based on Foata normal form. 89/3027 useless extension candidates. Maximal degree in co-relation 18332. Up to 733 conditions per place. [2024-11-22 13:49:41,813 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 114 selfloop transitions, 344 changer transitions 0/465 dead transitions. [2024-11-22 13:49:41,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 465 transitions, 6794 flow [2024-11-22 13:49:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 13:49:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 13:49:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 282 transitions. [2024-11-22 13:49:41,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-11-22 13:49:41,815 INFO L175 Difference]: Start difference. First operand has 142 places, 271 transitions, 3593 flow. Second operand 28 states and 282 transitions. [2024-11-22 13:49:41,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 465 transitions, 6794 flow [2024-11-22 13:49:41,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 465 transitions, 6360 flow, removed 169 selfloop flow, removed 10 redundant places. [2024-11-22 13:49:41,969 INFO L231 Difference]: Finished difference. Result has 174 places, 390 transitions, 6040 flow [2024-11-22 13:49:41,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6040, PETRI_PLACES=174, PETRI_TRANSITIONS=390} [2024-11-22 13:49:41,970 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 150 predicate places. [2024-11-22 13:49:41,970 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 390 transitions, 6040 flow [2024-11-22 13:49:41,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-11-22 13:49:41,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:41,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:41,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 13:49:42,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:42,175 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:42,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash -804285242, now seen corresponding path program 6 times [2024-11-22 13:49:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459170132] [2024-11-22 13:49:42,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:49:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:42,193 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:49:42,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:42,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:42,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459170132] [2024-11-22 13:49:42,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459170132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:42,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062963071] [2024-11-22 13:49:42,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:49:42,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:42,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:42,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:42,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:49:42,459 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:49:42,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:42,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:42,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:42,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:42,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062963071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:42,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:42,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-22 13:49:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306509140] [2024-11-22 13:49:42,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:42,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:49:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:49:42,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:49:42,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:42,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 390 transitions, 6040 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-22 13:49:42,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:42,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:42,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:44,278 INFO L124 PetriNetUnfolderBase]: 2414/4330 cut-off events. [2024-11-22 13:49:44,279 INFO L125 PetriNetUnfolderBase]: For 60423/60453 co-relation queries the response was YES. [2024-11-22 13:49:44,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30797 conditions, 4330 events. 2414/4330 cut-off events. For 60423/60453 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27040 event pairs, 74 based on Foata normal form. 102/4400 useless extension candidates. Maximal degree in co-relation 29926. Up to 1091 conditions per place. [2024-11-22 13:49:44,332 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 147 selfloop transitions, 594 changer transitions 4/752 dead transitions. [2024-11-22 13:49:44,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 752 transitions, 12999 flow [2024-11-22 13:49:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-22 13:49:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-22 13:49:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 429 transitions. [2024-11-22 13:49:44,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-22 13:49:44,335 INFO L175 Difference]: Start difference. First operand has 174 places, 390 transitions, 6040 flow. Second operand 41 states and 429 transitions. [2024-11-22 13:49:44,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 752 transitions, 12999 flow [2024-11-22 13:49:44,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 752 transitions, 12086 flow, removed 240 selfloop flow, removed 7 redundant places. [2024-11-22 13:49:44,762 INFO L231 Difference]: Finished difference. Result has 222 places, 660 transitions, 11559 flow [2024-11-22 13:49:44,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5553, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=11559, PETRI_PLACES=222, PETRI_TRANSITIONS=660} [2024-11-22 13:49:44,763 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 198 predicate places. [2024-11-22 13:49:44,763 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 660 transitions, 11559 flow [2024-11-22 13:49:44,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-22 13:49:44,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:44,764 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:44,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 13:49:44,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 13:49:44,965 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:44,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1521188572, now seen corresponding path program 7 times [2024-11-22 13:49:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:44,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251072647] [2024-11-22 13:49:44,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:44,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:45,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251072647] [2024-11-22 13:49:45,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251072647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201894211] [2024-11-22 13:49:45,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:49:45,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:45,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:45,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:45,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:49:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:49:45,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:45,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:45,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:45,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201894211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:45,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:45,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-22 13:49:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497457117] [2024-11-22 13:49:45,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:45,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:49:45,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:49:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:49:45,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:45,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 660 transitions, 11559 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 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) [2024-11-22 13:49:45,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:45,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:45,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:46,721 INFO L124 PetriNetUnfolderBase]: 2771/4948 cut-off events. [2024-11-22 13:49:46,722 INFO L125 PetriNetUnfolderBase]: For 85655/85691 co-relation queries the response was YES. [2024-11-22 13:49:46,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38715 conditions, 4948 events. 2771/4948 cut-off events. For 85655/85691 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 30731 event pairs, 152 based on Foata normal form. 32/4932 useless extension candidates. Maximal degree in co-relation 37809. Up to 1260 conditions per place. [2024-11-22 13:49:46,785 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 212 selfloop transitions, 610 changer transitions 1/830 dead transitions. [2024-11-22 13:49:46,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 830 transitions, 15998 flow [2024-11-22 13:49:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 13:49:46,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 13:49:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 254 transitions. [2024-11-22 13:49:46,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5019762845849802 [2024-11-22 13:49:46,787 INFO L175 Difference]: Start difference. First operand has 222 places, 660 transitions, 11559 flow. Second operand 23 states and 254 transitions. [2024-11-22 13:49:46,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 830 transitions, 15998 flow [2024-11-22 13:49:47,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 830 transitions, 15123 flow, removed 393 selfloop flow, removed 6 redundant places. [2024-11-22 13:49:47,409 INFO L231 Difference]: Finished difference. Result has 240 places, 763 transitions, 13799 flow [2024-11-22 13:49:47,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=10796, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13799, PETRI_PLACES=240, PETRI_TRANSITIONS=763} [2024-11-22 13:49:47,410 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2024-11-22 13:49:47,410 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 763 transitions, 13799 flow [2024-11-22 13:49:47,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 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) [2024-11-22 13:49:47,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:47,411 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:47,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:47,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 13:49:47,616 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:47,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1008241726, now seen corresponding path program 8 times [2024-11-22 13:49:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473151198] [2024-11-22 13:49:47,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:47,631 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:47,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:47,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:47,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473151198] [2024-11-22 13:49:47,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473151198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:47,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196618258] [2024-11-22 13:49:47,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:49:47,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:47,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:47,742 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:47,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:49:47,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:49:47,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:47,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:47,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:47,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:47,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196618258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:47,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:47,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-22 13:49:47,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051985338] [2024-11-22 13:49:47,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:47,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:49:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:49:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:49:47,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:47,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 763 transitions, 13799 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:49:47,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:47,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:47,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:50,373 INFO L124 PetriNetUnfolderBase]: 4076/7402 cut-off events. [2024-11-22 13:49:50,373 INFO L125 PetriNetUnfolderBase]: For 130231/130263 co-relation queries the response was YES. [2024-11-22 13:49:50,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57513 conditions, 7402 events. 4076/7402 cut-off events. For 130231/130263 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 49710 event pairs, 320 based on Foata normal form. 102/7456 useless extension candidates. Maximal degree in co-relation 57373. Up to 1705 conditions per place. [2024-11-22 13:49:50,629 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 374 selfloop transitions, 920 changer transitions 1/1302 dead transitions. [2024-11-22 13:49:50,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1302 transitions, 25770 flow [2024-11-22 13:49:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-22 13:49:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-22 13:49:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 458 transitions. [2024-11-22 13:49:50,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44294003868471954 [2024-11-22 13:49:50,639 INFO L175 Difference]: Start difference. First operand has 240 places, 763 transitions, 13799 flow. Second operand 47 states and 458 transitions. [2024-11-22 13:49:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1302 transitions, 25770 flow [2024-11-22 13:49:51,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1302 transitions, 25340 flow, removed 77 selfloop flow, removed 10 redundant places. [2024-11-22 13:49:51,481 INFO L231 Difference]: Finished difference. Result has 296 places, 1158 transitions, 24324 flow [2024-11-22 13:49:51,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=13373, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=24324, PETRI_PLACES=296, PETRI_TRANSITIONS=1158} [2024-11-22 13:49:51,482 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 272 predicate places. [2024-11-22 13:49:51,482 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 1158 transitions, 24324 flow [2024-11-22 13:49:51,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:49:51,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:51,483 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:51,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 13:49:51,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 13:49:51,683 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:51,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1930697516, now seen corresponding path program 9 times [2024-11-22 13:49:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:51,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461202919] [2024-11-22 13:49:51,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:51,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:51,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:49:51,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:51,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:51,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461202919] [2024-11-22 13:49:51,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461202919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:51,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270343057] [2024-11-22 13:49:51,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:49:51,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:51,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:51,897 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:51,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 13:49:51,945 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:49:51,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:51,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:51,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:52,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270343057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:52,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:52,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2024-11-22 13:49:52,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727824527] [2024-11-22 13:49:52,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:52,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 13:49:52,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 13:49:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-22 13:49:52,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:52,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1158 transitions, 24324 flow. Second operand has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 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) [2024-11-22 13:49:52,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:52,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:52,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:57,111 INFO L124 PetriNetUnfolderBase]: 4598/8320 cut-off events. [2024-11-22 13:49:57,111 INFO L125 PetriNetUnfolderBase]: For 186196/186228 co-relation queries the response was YES. [2024-11-22 13:49:57,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71673 conditions, 8320 events. 4598/8320 cut-off events. For 186196/186228 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 56938 event pairs, 372 based on Foata normal form. 40/8310 useless extension candidates. Maximal degree in co-relation 71393. Up to 1923 conditions per place. [2024-11-22 13:49:57,210 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 259 selfloop transitions, 1114 changer transitions 5/1385 dead transitions. [2024-11-22 13:49:57,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1385 transitions, 31231 flow [2024-11-22 13:49:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 13:49:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-22 13:49:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 312 transitions. [2024-11-22 13:49:57,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-11-22 13:49:57,212 INFO L175 Difference]: Start difference. First operand has 296 places, 1158 transitions, 24324 flow. Second operand 32 states and 312 transitions. [2024-11-22 13:49:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1385 transitions, 31231 flow [2024-11-22 13:49:58,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1385 transitions, 30608 flow, removed 278 selfloop flow, removed 9 redundant places. [2024-11-22 13:49:58,938 INFO L231 Difference]: Finished difference. Result has 330 places, 1330 transitions, 31641 flow [2024-11-22 13:49:58,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=23733, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=943, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=31641, PETRI_PLACES=330, PETRI_TRANSITIONS=1330} [2024-11-22 13:49:58,940 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 306 predicate places. [2024-11-22 13:49:58,940 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 1330 transitions, 31641 flow [2024-11-22 13:49:58,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 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) [2024-11-22 13:49:58,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:49:58,940 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:49:58,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 13:49:59,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 13:49:59,141 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:49:59,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:49:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1850756804, now seen corresponding path program 10 times [2024-11-22 13:49:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:49:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201483435] [2024-11-22 13:49:59,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:59,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:49:59,152 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:59,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:49:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201483435] [2024-11-22 13:49:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201483435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:49:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223642159] [2024-11-22 13:49:59,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:49:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:49:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:49:59,268 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:49:59,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 13:49:59,311 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:49:59,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:49:59,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:49:59,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:49:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:59,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:49:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:49:59,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223642159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:59,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-22 13:49:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045339363] [2024-11-22 13:49:59,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:59,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:49:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:49:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:49:59,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:49:59,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1330 transitions, 31641 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-11-22 13:49:59,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:59,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:49:59,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:50:03,011 INFO L124 PetriNetUnfolderBase]: 4745/8567 cut-off events. [2024-11-22 13:50:03,011 INFO L125 PetriNetUnfolderBase]: For 230581/230615 co-relation queries the response was YES. [2024-11-22 13:50:03,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80897 conditions, 8567 events. 4745/8567 cut-off events. For 230581/230615 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 59140 event pairs, 620 based on Foata normal form. 18/8531 useless extension candidates. Maximal degree in co-relation 80600. Up to 3078 conditions per place. [2024-11-22 13:50:03,104 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 527 selfloop transitions, 870 changer transitions 4/1408 dead transitions. [2024-11-22 13:50:03,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1408 transitions, 35727 flow [2024-11-22 13:50:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 13:50:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-22 13:50:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 218 transitions. [2024-11-22 13:50:03,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-11-22 13:50:03,105 INFO L175 Difference]: Start difference. First operand has 330 places, 1330 transitions, 31641 flow. Second operand 22 states and 218 transitions. [2024-11-22 13:50:03,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1408 transitions, 35727 flow [2024-11-22 13:50:05,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1408 transitions, 35057 flow, removed 248 selfloop flow, removed 17 redundant places. [2024-11-22 13:50:05,799 INFO L231 Difference]: Finished difference. Result has 333 places, 1359 transitions, 33432 flow [2024-11-22 13:50:05,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=30935, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=836, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=33432, PETRI_PLACES=333, PETRI_TRANSITIONS=1359} [2024-11-22 13:50:05,801 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 309 predicate places. [2024-11-22 13:50:05,801 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 1359 transitions, 33432 flow [2024-11-22 13:50:05,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-11-22 13:50:05,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:50:05,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:50:05,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 13:50:06,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 13:50:06,002 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:50:06,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:50:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1709550660, now seen corresponding path program 11 times [2024-11-22 13:50:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:50:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796847904] [2024-11-22 13:50:06,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:50:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:50:06,021 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:50:06,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:50:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796847904] [2024-11-22 13:50:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796847904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:50:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694538097] [2024-11-22 13:50:06,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:50:06,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:06,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:50:06,168 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:50:06,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 13:50:06,217 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:50:06,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:06,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:50:06,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:50:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:06,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:50:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:06,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694538097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:50:06,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:50:06,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-22 13:50:06,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821412673] [2024-11-22 13:50:06,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:50:06,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:50:06,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:50:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:50:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:50:06,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:50:06,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1359 transitions, 33432 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-11-22 13:50:06,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:50:06,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:50:06,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:50:11,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 13:50:14,711 INFO L124 PetriNetUnfolderBase]: 6365/11522 cut-off events. [2024-11-22 13:50:14,712 INFO L125 PetriNetUnfolderBase]: For 320516/320560 co-relation queries the response was YES. [2024-11-22 13:50:14,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111271 conditions, 11522 events. 6365/11522 cut-off events. For 320516/320560 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 83537 event pairs, 733 based on Foata normal form. 100/11551 useless extension candidates. Maximal degree in co-relation 110782. Up to 3464 conditions per place. [2024-11-22 13:50:14,884 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 1072 selfloop transitions, 948 changer transitions 1/2028 dead transitions. [2024-11-22 13:50:14,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2028 transitions, 53452 flow [2024-11-22 13:50:14,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 13:50:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-22 13:50:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 384 transitions. [2024-11-22 13:50:14,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-11-22 13:50:14,887 INFO L175 Difference]: Start difference. First operand has 333 places, 1359 transitions, 33432 flow. Second operand 38 states and 384 transitions. [2024-11-22 13:50:14,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 2028 transitions, 53452 flow [2024-11-22 13:50:19,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 2028 transitions, 52792 flow, removed 53 selfloop flow, removed 12 redundant places. [2024-11-22 13:50:19,720 INFO L231 Difference]: Finished difference. Result has 378 places, 1780 transitions, 47619 flow [2024-11-22 13:50:19,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=32921, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=47619, PETRI_PLACES=378, PETRI_TRANSITIONS=1780} [2024-11-22 13:50:19,722 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 354 predicate places. [2024-11-22 13:50:19,723 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 1780 transitions, 47619 flow [2024-11-22 13:50:19,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-11-22 13:50:19,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:50:19,723 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:50:19,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 13:50:19,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 13:50:19,928 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:50:19,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:50:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2001842386, now seen corresponding path program 12 times [2024-11-22 13:50:19,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:50:19,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313832161] [2024-11-22 13:50:19,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:50:19,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:50:19,940 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 13:50:19,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:50:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313832161] [2024-11-22 13:50:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313832161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:50:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799072861] [2024-11-22 13:50:20,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:50:20,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:20,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:50:20,147 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:50:20,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 13:50:20,195 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 13:50:20,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:20,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:50:20,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:50:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:20,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:50:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799072861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:50:20,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:50:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-22 13:50:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941663363] [2024-11-22 13:50:20,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:50:20,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:50:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:50:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:50:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:50:20,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:50:20,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 1780 transitions, 47619 flow. Second operand has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 17 states have internal predecessors, (118), 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) [2024-11-22 13:50:20,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:50:20,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:50:20,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:50:25,457 INFO L124 PetriNetUnfolderBase]: 6402/11627 cut-off events. [2024-11-22 13:50:25,457 INFO L125 PetriNetUnfolderBase]: For 388636/388680 co-relation queries the response was YES. [2024-11-22 13:50:25,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119687 conditions, 11627 events. 6402/11627 cut-off events. For 388636/388680 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 84805 event pairs, 1751 based on Foata normal form. 10/11568 useless extension candidates. Maximal degree in co-relation 119186. Up to 8571 conditions per place. [2024-11-22 13:50:25,611 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 1611 selfloop transitions, 198 changer transitions 5/1821 dead transitions. [2024-11-22 13:50:25,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1821 transitions, 52086 flow [2024-11-22 13:50:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:50:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:50:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-11-22 13:50:25,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4370629370629371 [2024-11-22 13:50:25,612 INFO L175 Difference]: Start difference. First operand has 378 places, 1780 transitions, 47619 flow. Second operand 13 states and 125 transitions. [2024-11-22 13:50:25,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 1821 transitions, 52086 flow [2024-11-22 13:50:31,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1821 transitions, 51619 flow, removed 169 selfloop flow, removed 3 redundant places. [2024-11-22 13:50:31,476 INFO L231 Difference]: Finished difference. Result has 393 places, 1791 transitions, 47965 flow [2024-11-22 13:50:31,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=47156, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=47965, PETRI_PLACES=393, PETRI_TRANSITIONS=1791} [2024-11-22 13:50:31,478 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 369 predicate places. [2024-11-22 13:50:31,478 INFO L471 AbstractCegarLoop]: Abstraction has has 393 places, 1791 transitions, 47965 flow [2024-11-22 13:50:31,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 17 states have internal predecessors, (118), 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) [2024-11-22 13:50:31,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:50:31,479 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:50:31,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 13:50:31,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:31,680 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:50:31,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:50:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1022163140, now seen corresponding path program 13 times [2024-11-22 13:50:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:50:31,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110132869] [2024-11-22 13:50:31,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:50:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:50:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:50:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:31,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:50:31,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110132869] [2024-11-22 13:50:31,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110132869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:50:31,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817771498] [2024-11-22 13:50:31,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:50:31,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:31,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:50:31,801 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:50:31,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 13:50:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:50:31,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:50:31,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:50:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:31,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:50:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:32,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817771498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:50:32,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:50:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-22 13:50:32,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835835958] [2024-11-22 13:50:32,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:50:32,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:50:32,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:50:32,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:50:32,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:50:32,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:50:32,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1791 transitions, 47965 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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) [2024-11-22 13:50:32,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:50:32,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:50:32,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:50:37,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 13:50:44,431 INFO L124 PetriNetUnfolderBase]: 9857/17753 cut-off events. [2024-11-22 13:50:44,432 INFO L125 PetriNetUnfolderBase]: For 580602/580698 co-relation queries the response was YES. [2024-11-22 13:50:44,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184383 conditions, 17753 events. 9857/17753 cut-off events. For 580602/580698 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 136397 event pairs, 897 based on Foata normal form. 90/17720 useless extension candidates. Maximal degree in co-relation 183693. Up to 4643 conditions per place. [2024-11-22 13:50:44,856 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 942 selfloop transitions, 2011 changer transitions 3/2963 dead transitions. [2024-11-22 13:50:44,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 2963 transitions, 85536 flow [2024-11-22 13:50:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 13:50:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-22 13:50:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 326 transitions. [2024-11-22 13:50:44,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4780058651026393 [2024-11-22 13:50:44,858 INFO L175 Difference]: Start difference. First operand has 393 places, 1791 transitions, 47965 flow. Second operand 31 states and 326 transitions. [2024-11-22 13:50:44,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 2963 transitions, 85536 flow [2024-11-22 13:50:54,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 2963 transitions, 85250 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-22 13:50:54,479 INFO L231 Difference]: Finished difference. Result has 427 places, 2865 transitions, 85358 flow [2024-11-22 13:50:54,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=47646, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=85358, PETRI_PLACES=427, PETRI_TRANSITIONS=2865} [2024-11-22 13:50:54,481 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 403 predicate places. [2024-11-22 13:50:54,481 INFO L471 AbstractCegarLoop]: Abstraction has has 427 places, 2865 transitions, 85358 flow [2024-11-22 13:50:54,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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) [2024-11-22 13:50:54,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:50:54,481 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:50:54,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 13:50:54,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:54,682 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:50:54,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:50:54,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1202183656, now seen corresponding path program 14 times [2024-11-22 13:50:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:50:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468712869] [2024-11-22 13:50:54,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:50:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:50:54,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:50:54,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:54,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:50:54,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468712869] [2024-11-22 13:50:54,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468712869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:50:54,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548976646] [2024-11-22 13:50:54,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:50:54,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:50:54,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:50:54,898 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:50:54,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 13:50:54,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:50:54,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:50:54,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:50:54,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:50:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:55,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:50:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:50:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548976646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:50:55,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:50:55,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-22 13:50:55,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387431365] [2024-11-22 13:50:55,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:50:55,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:50:55,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:50:55,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:50:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:50:55,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:50:55,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 2865 transitions, 85358 flow. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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) [2024-11-22 13:50:55,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:50:55,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:50:55,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand