./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-match-trans.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 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:27:49,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:27:49,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:27:49,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:27:49,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:27:49,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:27:49,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:27:49,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:27:49,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:27:49,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:27:49,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:27:49,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:27:49,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:27:49,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:27:49,642 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:27:49,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:27:49,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:27:49,643 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:27:49,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:27:49,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:27:49,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:27:49,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:27:49,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:27:49,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:27:49,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:27:49,646 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:27:49,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:27:49,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:27:49,646 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:27:49,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:27:49,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:27:49,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:27:49,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:27:49,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:27:49,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:27:49,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:27:49,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:27:49,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:27:49,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:27:49,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:27:49,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:27:49,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:27:49,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 [2024-11-10 10:27:49,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:27:49,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:27:49,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:27:49,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:27:49,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:27:49,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2024-11-10 10:27:51,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:27:51,662 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:27:51,663 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2024-11-10 10:27:51,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fcbe8b3/6c45851cc8c949bfa302c25c5f7d194b/FLAGe816fb0e6 [2024-11-10 10:27:52,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fcbe8b3/6c45851cc8c949bfa302c25c5f7d194b [2024-11-10 10:27:52,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:27:52,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:27:52,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:27:52,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:27:52,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:27:52,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f0ab75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52, skipping insertion in model container [2024-11-10 10:27:52,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:27:52,308 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/chl-match-trans.wvr.c[2993,3006] [2024-11-10 10:27:52,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:27:52,329 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:27:52,361 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/chl-match-trans.wvr.c[2993,3006] [2024-11-10 10:27:52,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:27:52,386 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:27:52,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52 WrapperNode [2024-11-10 10:27:52,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:27:52,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:27:52,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:27:52,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:27:52,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,436 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 195 [2024-11-10 10:27:52,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:27:52,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:27:52,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:27:52,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:27:52,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,474 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]. [2024-11-10 10:27:52,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,482 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,485 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:27:52,490 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:27:52,490 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:27:52,491 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:27:52,493 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (1/1) ... [2024-11-10 10:27:52,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:27:52,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:27:52,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:27:52,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:27:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:27:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:27:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:27:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:27:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:27:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:27:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:27:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:27:52,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:27:52,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:27:52,615 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:27:52,752 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:27:52,755 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:27:53,163 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:27:53,163 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:27:53,488 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:27:53,488 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:27:53,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:53 BoogieIcfgContainer [2024-11-10 10:27:53,489 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:27:53,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:27:53,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:27:53,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:27:53,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:27:52" (1/3) ... [2024-11-10 10:27:53,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3412215a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:53, skipping insertion in model container [2024-11-10 10:27:53,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:52" (2/3) ... [2024-11-10 10:27:53,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3412215a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:53, skipping insertion in model container [2024-11-10 10:27:53,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:53" (3/3) ... [2024-11-10 10:27:53,501 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2024-11-10 10:27:53,519 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:27:53,521 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:27:53,521 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:27:53,574 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:27:53,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 59 flow [2024-11-10 10:27:53,704 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-11-10 10:27:53,704 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:27:53,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-10 10:27:53,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 59 flow [2024-11-10 10:27:53,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 15 transitions, 48 flow [2024-11-10 10:27:53,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:27:53,732 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;@593cec53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:27:53,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:27:53,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:27:53,747 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-10 10:27:53,747 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:27:53,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:53,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:53,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:27:53,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1747409276, now seen corresponding path program 1 times [2024-11-10 10:27:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:53,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734513169] [2024-11-10 10:27:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:53,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:54,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734513169] [2024-11-10 10:27:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734513169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:54,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:54,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:27:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074159441] [2024-11-10 10:27:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:54,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:27:54,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:27:54,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:27:54,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:27:54,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:54,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:54,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:27:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:54,954 INFO L124 PetriNetUnfolderBase]: 32/85 cut-off events. [2024-11-10 10:27:54,954 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-10 10:27:54,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 85 events. 32/85 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 226 event pairs, 1 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 145. Up to 34 conditions per place. [2024-11-10 10:27:54,958 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 26 selfloop transitions, 6 changer transitions 5/38 dead transitions. [2024-11-10 10:27:54,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 198 flow [2024-11-10 10:27:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:27:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:27:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-11-10 10:27:54,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-11-10 10:27:54,973 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 48 flow. Second operand 6 states and 62 transitions. [2024-11-10 10:27:54,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 198 flow [2024-11-10 10:27:54,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:27:54,981 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 69 flow [2024-11-10 10:27:54,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2024-11-10 10:27:54,987 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-11-10 10:27:54,988 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 69 flow [2024-11-10 10:27:54,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:54,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:54,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:54,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:27:54,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:27:54,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1760584542, now seen corresponding path program 2 times [2024-11-10 10:27:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768573248] [2024-11-10 10:27:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:55,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768573248] [2024-11-10 10:27:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768573248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:55,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:55,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:27:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993655076] [2024-11-10 10:27:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:55,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:27:55,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:27:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:27:55,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:27:55,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:55,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:55,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:27:55,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:55,722 INFO L124 PetriNetUnfolderBase]: 32/100 cut-off events. [2024-11-10 10:27:55,724 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-10 10:27:55,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 100 events. 32/100 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 348 event pairs, 6 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 264. Up to 48 conditions per place. [2024-11-10 10:27:55,726 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 24 selfloop transitions, 9 changer transitions 3/37 dead transitions. [2024-11-10 10:27:55,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 197 flow [2024-11-10 10:27:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:27:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:27:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-10 10:27:55,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5684210526315789 [2024-11-10 10:27:55,729 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 69 flow. Second operand 5 states and 54 transitions. [2024-11-10 10:27:55,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 197 flow [2024-11-10 10:27:55,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 193 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 10:27:55,732 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 116 flow [2024-11-10 10:27:55,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2024-11-10 10:27:55,733 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2024-11-10 10:27:55,733 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 116 flow [2024-11-10 10:27:55,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:55,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:55,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:55,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:27:55,735 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:27:55,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash -881154222, now seen corresponding path program 3 times [2024-11-10 10:27:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:55,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648989001] [2024-11-10 10:27:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:55,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:56,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:56,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648989001] [2024-11-10 10:27:56,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648989001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:56,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:56,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:27:56,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115505726] [2024-11-10 10:27:56,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:56,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:27:56,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:27:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:27:56,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:27:56,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:56,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:56,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:27:56,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:56,241 INFO L124 PetriNetUnfolderBase]: 32/98 cut-off events. [2024-11-10 10:27:56,241 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-10 10:27:56,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 98 events. 32/98 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 322 event pairs, 6 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 197. Up to 44 conditions per place. [2024-11-10 10:27:56,243 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 19 selfloop transitions, 8 changer transitions 9/37 dead transitions. [2024-11-10 10:27:56,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 241 flow [2024-11-10 10:27:56,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:27:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:27:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-11-10 10:27:56,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-11-10 10:27:56,245 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 116 flow. Second operand 5 states and 52 transitions. [2024-11-10 10:27:56,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 241 flow [2024-11-10 10:27:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 234 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 10:27:56,249 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 120 flow [2024-11-10 10:27:56,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2024-11-10 10:27:56,252 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2024-11-10 10:27:56,252 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 120 flow [2024-11-10 10:27:56,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:56,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:56,253 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:56,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:27:56,253 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:27:56,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1149100078, now seen corresponding path program 4 times [2024-11-10 10:27:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411607982] [2024-11-10 10:27:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411607982] [2024-11-10 10:27:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411607982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:56,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:27:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309974992] [2024-11-10 10:27:56,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:56,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:27:56,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:56,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:27:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:27:56,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:27:56,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:56,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:56,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:27:56,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:56,708 INFO L124 PetriNetUnfolderBase]: 16/54 cut-off events. [2024-11-10 10:27:56,708 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-10 10:27:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 54 events. 16/54 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 127 event pairs, 0 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 162. Up to 18 conditions per place. [2024-11-10 10:27:56,710 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 16 selfloop transitions, 6 changer transitions 10/33 dead transitions. [2024-11-10 10:27:56,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 224 flow [2024-11-10 10:27:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:27:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:27:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2024-11-10 10:27:56,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-11-10 10:27:56,712 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 120 flow. Second operand 6 states and 55 transitions. [2024-11-10 10:27:56,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 224 flow [2024-11-10 10:27:56,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 186 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-10 10:27:56,715 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 85 flow [2024-11-10 10:27:56,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2024-11-10 10:27:56,716 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2024-11-10 10:27:56,716 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 85 flow [2024-11-10 10:27:56,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:56,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:56,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:56,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:27:56,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:27:56,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 555970662, now seen corresponding path program 5 times [2024-11-10 10:27:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645703080] [2024-11-10 10:27:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:57,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645703080] [2024-11-10 10:27:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645703080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:57,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:27:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754091484] [2024-11-10 10:27:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:57,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:27:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:27:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:27:57,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:27:57,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:57,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:57,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:27:57,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:57,148 INFO L124 PetriNetUnfolderBase]: 8/37 cut-off events. [2024-11-10 10:27:57,148 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-10 10:27:57,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 37 events. 8/37 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 121. Up to 17 conditions per place. [2024-11-10 10:27:57,149 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 13 selfloop transitions, 3 changer transitions 10/27 dead transitions. [2024-11-10 10:27:57,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 159 flow [2024-11-10 10:27:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:27:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:27:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2024-11-10 10:27:57,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-11-10 10:27:57,151 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 85 flow. Second operand 6 states and 51 transitions. [2024-11-10 10:27:57,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 159 flow [2024-11-10 10:27:57,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 138 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-10 10:27:57,153 INFO L231 Difference]: Finished difference. Result has 33 places, 15 transitions, 56 flow [2024-11-10 10:27:57,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=15} [2024-11-10 10:27:57,153 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2024-11-10 10:27:57,154 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 15 transitions, 56 flow [2024-11-10 10:27:57,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:57,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:27:57,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:27:57,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:27:57,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:27:57,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:27:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1411277316, now seen corresponding path program 6 times [2024-11-10 10:27:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:27:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207518455] [2024-11-10 10:27:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:27:57,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:27:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:27:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:27:57,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:27:57,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207518455] [2024-11-10 10:27:57,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207518455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:27:57,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:27:57,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:27:57,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479773800] [2024-11-10 10:27:57,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:27:57,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:27:57,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:27:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:27:57,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:27:57,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:27:57,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 15 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:57,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:27:57,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:27:57,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:27:57,567 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-10 10:27:57,567 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:27:57,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 19 events. 3/19 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2024-11-10 10:27:57,568 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2024-11-10 10:27:57,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 16 transitions, 88 flow [2024-11-10 10:27:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:27:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:27:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2024-11-10 10:27:57,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35964912280701755 [2024-11-10 10:27:57,570 INFO L175 Difference]: Start difference. First operand has 33 places, 15 transitions, 56 flow. Second operand 6 states and 41 transitions. [2024-11-10 10:27:57,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 16 transitions, 88 flow [2024-11-10 10:27:57,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 71 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:27:57,571 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2024-11-10 10:27:57,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2024-11-10 10:27:57,571 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2024-11-10 10:27:57,572 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2024-11-10 10:27:57,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2024-11-10 10:27:57,574 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-10 10:27:57,575 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-10 10:27:57,575 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 10:27:57,575 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 10:27:57,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:27:57,576 INFO L407 BasicCegarLoop]: Path program histogram: [6] [2024-11-10 10:27:57,579 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:27:57,579 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:27:57,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:27:57 BasicIcfg [2024-11-10 10:27:57,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:27:57,585 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:27:57,585 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:27:57,585 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:27:57,586 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:53" (3/4) ... [2024-11-10 10:27:57,588 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:27:57,591 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 10:27:57,591 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 10:27:57,591 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-10 10:27:57,597 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 58 nodes and edges [2024-11-10 10:27:57,597 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2024-11-10 10:27:57,597 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-10 10:27:57,598 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-10 10:27:57,700 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:27:57,701 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:27:57,701 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:27:57,702 INFO L158 Benchmark]: Toolchain (without parser) took 5638.69ms. Allocated memory was 138.4MB in the beginning and 255.9MB in the end (delta: 117.4MB). Free memory was 84.7MB in the beginning and 163.0MB in the end (delta: -78.3MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2024-11-10 10:27:57,702 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:27:57,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.94ms. Allocated memory is still 138.4MB. Free memory was 84.5MB in the beginning and 70.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-10 10:27:57,702 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.28ms. Allocated memory is still 138.4MB. Free memory was 70.8MB in the beginning and 68.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:27:57,702 INFO L158 Benchmark]: Boogie Preprocessor took 48.57ms. Allocated memory is still 138.4MB. Free memory was 68.6MB in the beginning and 66.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:27:57,703 INFO L158 Benchmark]: IcfgBuilder took 999.10ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 65.9MB in the beginning and 72.6MB in the end (delta: -6.6MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2024-11-10 10:27:57,703 INFO L158 Benchmark]: TraceAbstraction took 4093.07ms. Allocated memory was 172.0MB in the beginning and 255.9MB in the end (delta: 83.9MB). Free memory was 71.6MB in the beginning and 168.2MB in the end (delta: -96.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:27:57,703 INFO L158 Benchmark]: Witness Printer took 115.77ms. Allocated memory is still 255.9MB. Free memory was 168.2MB in the beginning and 163.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 10:27:57,704 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.94ms. Allocated memory is still 138.4MB. Free memory was 84.5MB in the beginning and 70.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.28ms. Allocated memory is still 138.4MB. Free memory was 70.8MB in the beginning and 68.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.57ms. Allocated memory is still 138.4MB. Free memory was 68.6MB in the beginning and 66.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 999.10ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 65.9MB in the beginning and 72.6MB in the end (delta: -6.6MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4093.07ms. Allocated memory was 172.0MB in the beginning and 255.9MB in the end (delta: 83.9MB). Free memory was 71.6MB in the beginning and 168.2MB in the end (delta: -96.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 115.77ms. Allocated memory is still 255.9MB. Free memory was 168.2MB in the beginning and 163.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 88]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 29 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 320 IncrementalHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 0 mSDtfsCounter, 320 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 692 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:27:57,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE